Deputy Keeper's Reports - Co Donegal References
Held at PRONI
Submitted by Stanley Nesbitt
D
A-B, C, D, E-F, G-H, I-L, M, N-Q, R-S, T-V, W-Y BACK
| Surname | Location | Document | Date | Reference |
| DALE Rebecca | Castledawson / Ldy | Test. papers | c1857 - c1904 | D 2513 |
| DALEY James | Ballyronan / Ldy | Gen. Store accts | 1851 - 1854 | D 2818 |
| DALWAY family | Red Hall / Ant | Title deeds etc | 1851 - 1929 | D 1905add |
| DALWAY Noah | Bellahill / Ant | R N Career | 1812 - 1840 | T 1701 |
| DALWAY Marriott Robert | Ballyhill / Ant | Sale details | c1883 | T 3546add |
| DALWAY Marriott Robert | Carrickfergus / Ant | Sale details | c1883 | T 3546add |
| DALY Denis Rt. Hon. | Dunsandle / Gal | Library sale catalog. | c1792 | T 2910 |
| DALY Elizabeth | Dungannon / Tyr | Will | c1870 | Mic 181 |
| DALZELL family | Ballywatticock / Dow | Internment notice | c1845 | T 2254 |
| DALZELL James | Ballywatticock / Dow | Letter | c1824 | T 2298 |
| DANIEL Richard Rev. | Dean of Armagh | Personal papers | 1702 - 1722 | D 3595 |
| DANIEL Robert | Dungannon / Tyr | Linen merch. papers | c1894 | D 2966/70 |
| DARBY Jonathan Mrs | Leap Castle / Roscrea | Burning of Castle | c1923 | T 2858 |
| D'ARCY-IRVINE Estate | Irvinestown / Fer | I.L.C. papers | c1902 - 1922 | D 1390 |
| DARGAN William | Caledon / Tyr | Agreement | c1839 | T 2433 |
| DARTREY Estate | Co. Armagh | Title deeds etc. | 1878 - 1940 | D 3053add |
| DARTREY Estate | Co. Monaghan | Title deeds etc. | 1878 - 1940 | D 3053add |
| DARTREY Lady | Co Monaghan | Letter | 11 Dec 1873 | D 1071/H/B/D/78 |
| DARTREY Lady | Co Monaghan | Rockcorry Church | c1855 | D3053/7/11 |
| DAVENNEY family | Manor Cunningham/Don | Title deeds | 1904 - 1912 | D 983 |
| DAVENPORT family | Ulster | Gen. notes | c1760 - 1927 | T 1264 |
| DAVENPORT family | Gen. Notes | c1080 - c1600 | T 2220 | |
| DAVIDSON family | Killyleagh / Dow | Gen. table | c1867 | D 3000/33 |
| DAVIDSON Archibald | Drumhirk / Dow | Sworn Statement | 19/6/1798 | D 714/3/7 |
| DAVIDSON Charles | Eglington / Ldy | Valuations | 1909, 1931 | D 2780 |
| DAVIDSON family | Ardress / Arm | Rent receipts | 1864 - 1893 | D 2505 |
| DAVIDSON family | Ballykillare / Dow | Title deeds etc. | 1865 - 1954 | D 3642 |
| DAVIDSON family | Carnalea / Dow | Title deeds etc. | 1865 - 1954 | D 3642 |
| DAVIDSON family | Castlewellan / Dow | Pedigree | 1660 - c1890 | T 2009 |
| DAVIDSON family | Castlewellan / Dow | Gen. notes | c1690 - 1865 | D 3000 / 33 |
| DAVIDSON family | Corkley / Arm | Title deeds,leases | 1846 - 1870 | T 3603 |
| DAVIDSON family | Killyleagh / Dow | Pedigree | 1660 - 1867 | T 1443 |
| DAVIDSON family | Linen Hill / Arm | Gen. notes | c1800 - 1958 | T 1570 |
| DAVIDSON family | Seacourt, Bangor | Title deeds etc. | 1865 - 1954 | D 3642 |
| DAVIDSON family | Seacourt, Bangor | Pedigree | c1800 - 1972 | D 3642 |
| DAVIDSON James | Eglington / Ldy | Valuations | 1909, 1931 | D 2780 |
| DAVIDSON & HARDY Chem | Belfast | 56 Perscription bks | 1868 - 1939 | D 1008 |
| DAVIS family | Bawnhill / Arm | Leases | 1819, 1831 | D 2027add |
| DAVIS family | Manorhamilton / Leitrim | Gen. notes | mid18c - c1960 | T 3594 |
| DAVIS family | Summer Island / Arm | Leases | 1819, 1831 | D 2027add |
| DAVIS James | Drogheda / Louth | Copy Will | c1804 | D 1242add |
| DAVIS John Rev. | Clonallan / Dow | Copy Will & Codicil | c1836 | D 1242add |
| DAVIS Paul Sir | Clondahorky / Don | Letters patent | c 1630 | D 1935 |
| DAVIS R. H. Capt. | Belfast | Personal papers | 1894 - 1955 | D 2015 |
| DAVIS Robert | Corlacky / Don | Letters patent | c 1630 | D 1935 |
| DAVISON Alexander | Carrigan / Ant | Rental | c1836 | T 3300/1 |
| DAVISON Alexander | Craigdunloof / Ant | Rental | c1836 | T 3300/1 |
| DAVISON Alexander | Dungonnell / Ant | Rental | c1836 | T 3300/1 |
| DAVISON Alexander | Evishacrow / Ant | Rental | c1836 | T 3300/1 |
| DAVISON Alexander | Knockboy / Ant | Rental | c1836 | T 3300/1 |
| DAVISON Alexander | Legagrane / Ant | Rental | c1836 | T 3300/1 |
| DAVISON family | Ballymena / Ant | Financial letters | 1816 - 1828 | D 896 |
| DAVISON family | Kilbegs / Ant | Family history | c1780 - 1980 | T 3582 |
| DAVISON family | Killyberry Boyd / Ldy | Extract of census | c1841 | T 1756 |
| DAVISON family | Knockboy / Ant | Gen. notes | c1700 - c1900 | T 1861 |
| DAVISON James | Ballymena / Ant | Letter/Ld. M'cashel | c1798 | D 896 |
| DAVISON Richard MP | Dartrey / Mon | Photo. of monument | c1807 | T 1965/4add |
| DAVISON Thomas | Clare Castle / Arm | ms H. Marshall | c1770 | D 3710 |
| DAVYS family | Carrickfergus / Ant | Title deeds etc. | 1678 - 1856 | D 3603 |
| DAVYS Henry | Carrickfergus / Ant | Lease | Jan 1696 | T 3345 |
| DAWSON Abraham | Portadown / Arm | Copy Will | c 1820 | D 3047 |
| DAWSON Alexander | Riverstown / Louth | Election campaign | c1826 | T 2519/11 |
| DAWSON Estate | Co. Monaghan | Rental | 1884 - 1885 | T 3036 |
| DAWSON family | Ballymacarret / Dow | Title deeds etc. | 1738 - 1875 | D 3836 |
| DAWSON family | Bovean / Arm | Map | c1869 | D 3047 |
| DAWSON family | Bovean / Tyr | Title deeds, leases | 1654 - 1911 | D 3047 |
| DAWSON family | Castledawson / Ldy | Title deeds | 1712 - 1896 | D 2592 |
| DAWSON family | Dartrey / Mon | Estate papers | c1753 | D 3053add |
| DAWSON family | Dawsongrove / Mon | Misc. papers | 1636 - 1952 | D 3053 |
| DAWSON family | Dawsongrove / Mon | Gen. notes | 1712 - 1906 | T 3036 |
| DAWSON family | Laghey / Tyr | Title deeds, leases | 1654 - 1911 | D 3047 |
| DAWSON family | Lisnamorrow Ho. M'felt | House history | 1663 - 1970 | T 3735 |
| DAWSON family | Rockcorry / Mon | Gen. notes | 1712 - 1906 | T 3036 |
| DAWSON family | Tempauroe / Tyr | Title deeds, leases | 1654 - 1911 | D 3047 |
| DAWSON George R. | Castledawson / Ldy | Letters | 1847 - c1852 | T 2603 |
| DAWSON James | Bovean / Arm | Copy Will | c1823 | D 3047 |
| DAWSON Joseph | Lisburn / Ant | Will | c1831 | D 2453 |
| DAWSON Lands | Aghnamullen / Mon | Leases | 1668 - 1844 | D 3053 |
| DAWSON Lands | Cassan / Fer | Leases | 1664 - 1749 | D 3053 |
| DAWSON Lands | Cordressogagh / Cav | Leases | 1668 - 1844 | D 3053 |
| DAWSON Lands | Cremorne / Mon | Patent | c1667 | D 3053 |
| DAWSON Lands | Dartray / Mon | Patent | c1667 | D 3053 |
| DAWSON Lands | Dernamoyle / Cav | Leases | 1664 - 1749 | D 3053 |
| DAWSON Lands | Drum / Cav | Leases | 1668 - 1844 | D 3053 |
| DAWSON Lands | Drumgoole / Cav | Leases | 1668 - 1844 | D 3053 |
| DAWSON Lands | Drumintin / Fer | Leases | 1664 - 1749 | D 3053 |
| DAWSON Lands | Dyan / Cav | Leases | 1664 - 1749 | D 3053 |
| DAWSON Mary (Hazelton) | Bovean / Arm | Copy Will | c1793 | D 3047 |
| DAWSON Richard | Blackwatertown / Arm | Land rents | c1751 | D 2394 |
| DAWSON Richard | Whiteabbey / Ant | Copy Will | c1864 | D 2233 |
| DAWSON Richard Cornet | Cremorne / Mon | Title deeds etc. | 1654 - 1857 | D 3053 |
| DAWSON Richard Cornet | Dartreg / Mon | Title deeds etc. | 1654 - 1857 | D 3053 |
| DAWSON Thomas | Dawson's Grove / Mon | Maps | c1768 | T 3170 |
| DAWSON Thomas Estate | Blackwatertown / Arm | Estate records | 1757 - 1916 | D 526add |
| DAWSON William | Bovean / Arm | Copy Will | c1765 | D 3047 |
| DAWSON Richard Alderman | Trough / Mon | Conveyance | c1737 | D 3053 |
| DAWSON Richard 3rd Lord Cr | Dawson Grove / Arm | Copy plans | c1843 | D 3053add |
| DAWSON Richard Alderman | Ballynahone / Mon | Conveyance | 1743, 1751 | D 3053 |
| DAWSON Richard Alderman | Killeef / Mon | Conveyance | 1743, 1751 | D 3053 |
| DAWSON Richard Alderman | Leitrim / Mon | Conveyance | 1743, 1751 | D 3053 |
| DAWSON Richard Alderman | Tamlat / Mon | Conveyance | 1743, 1751 | D 3053 |
| DE BERNIERE family | Co. Down | Gen. notes | from 17c | D 1759 |
| DE BERNIERE family | Lisburn / Ant | Gen. notes | 1685 - 1877 | T 2625 |
| DE BERNIERE John | Lisburn / Ant | Copy Will | c1725 | T 2625 |
| DE BILLE Estate | Davagh / Tyr | Title deeds | c1864 - 1905 | D 2658 |
| DE BURGH family | Drumkeen / Lim | Pedigree | from 1420 | T 2519/1 |
| DE CLIFFORD Estate | Downpatrick / Dow | Leases | 1770 - 1831 | D 1167 |
| DE CLIFFORD Edward Rt. Hon | Downpatrick / Don | Rent Roll | 1789 - 1792 | D 3696add |
| DE CLIFFORD/SOUTHWELL | Downpatrick / Dow | Pedigree | 17c - 1930 | D 2961add |
| DE LACHEROIS family | Donaghadee / Dow | Misc. papers | c1685 - 1960 | Mic 321add |
| DE LACHEROIS family | Lisburn / Ant | Misc. papers | c1685 - 1960 | Mic 321add |
| DE LACHEROIS family | Lisburn / Ant | Gen. notes | from 1638 | Mic 321add |
| DE LACHEROIS Nicholas Maj | Lisburn / Ant | Copy Will | c1702 | Mic 321add |
| DE MORTONE Geoffrey | Dublin | Letters patent bridge | c1331 | D 1182 |
| DE ROS Estate | Strangford / Dow | Memoranda book | c1862 | T 1588 |
| DE SALIS Estate | Clare / Arm | Leases | 19c | D 1253 |
| DE VALERA Eamon | Dublin | Gen. Smutts letter | c1921 | T 1312 |
| DE VERE BEAUCLERK Estate | Ardglass / Dow | Rentals etc. | 1905 - 1909 | D 1607add |
| DE VERE BEAUCLERK Estate | Bright / Dow | Rentals etc. | 1905 - 1909 | D 1607add |
| DE VERE BEAUCLERK Aubr | Ardglass / Dow | Judges rentals | c1911 | D 2788 |
| DEACON family | Altaturk / Arm | Pedigree | c1698 - 1942 | T 2466 |
| DEACON family | Tirnascobe / Arm | Pedigree | c1698 - 1942 | T 2466 |
| DEANE Joseph | Warrenpoint / Dow | Letters patent | c1667 | T 2374 |
| DEAZELEY family | Corbally / Tyr | Test. papers etc. | 1853 - 1927 | D 3774 |
| DEAZELEY John | Corbally / Tyr | Copy Will | c1859 | D 3774 |
| DEAZELEY William | Corbally / Tyr | Copy Will | c1867 | D 3774 |
| DEAZLEY Catherine | Corbally / Tyr | ms Alex. Warnock | c1853 | D 3774 |
| DE-CLIFFORD Edward Rt. Hon | Annacloy / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballee / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballintogher / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballybeg / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballycruttle / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballydonety / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballydugan / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballymote / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballynacraig / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballysallagh / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Ballywarren / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Hollymount / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Inch / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Lisbane / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Loughmoney / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Saul / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Struell / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DE-CLIFFORD Edward Rt. Hon | Walshestown / Dow | Rent Roll | 1789 - 1792 | D 3696add |
| DEENY family | Fanad / Don | Notes | 12c - early17c | T 3690 |
| DEIGHAN family | Coleraine / Ldy | Test. papers | 1837 - 1936 | D 992 |
| DELACHEROIS Daniel | Donaghadee / Dow | Maps, plans | 1728 - 1821 | T 2845 |
| DELACHEROIS Daniel | Donaghadee / Dow | Lease | c1825 | D 1446 |
| DELACHEROIS family | Carrowdore / Dow | Gen. notes | 1590 - c1950 | T 2948 |
| DELACHEROIS family | Donaghadee / Dow | Gen. notes | from 17c | D 2471 |
| DELACHEROIS family | Lisburn / Ant | Gen. notes | 1590 - c1950 | T 2948 |
| DELAP family | Ballyshannon / Don | Leases etc. | 1737 - 1826 | T 2295 |
| DELAP family | Drumherrive / Don | Misc. papers | 1789 - 1849 | D 2214add |
| DELAP family | Rathmelton / Don | Legal papers etc. | 1786 - 1830 | T 1336/2 |
| DELAP family | Ray / Don | Legal papers etc. | 1786 - 1830 | T 1336/2 |
| DELAP family | Ray / Don | Misc. papers | 1789 - 1849 | D 2214add |
| DELAP family | Strabane / Tyr | Misc. papers | 1789 - 1849 | D 2214add |
| DELAP James | Belfast | Lease Joy's Dam | c1821 | D 684 |
| DELAP Robert Rev. | Breaghy / Don | Map | c1875 | D 2298add |
| DELAP Robert Rev. | Dooghan / Don | Map | c1875 | D 2298add |
| DELAP Robert Rev. | Grahamsland / Don | Map | c1875 | D 2298add |
| DELAP Robert Rev. | Lisnabert / Don | Map | c1875 | D 2298add |
| DELAP Robert Rev. | Magherashanvally/Don | Map | c1875 | D 2298add |
| DELAP Robert Rev. | Sessiagh / Don | Map | c1875 | D 2298add |
| DEMPSEY family | Ballymena / Ant | Misc. papers | c1860 - 1914 | D 2966/82 |
| DEMPSTER family | Donaghcloney / Dow | Title deeds bl. green | 1708 - c1920 | D 1820 |
| DENISON Samuel | Dromore / Dow | Emigrant letter | c1789 | T 2294 |
| DENNISON Patrick | Manorhamilton / Leitrim | Corresp. | c1894 | D 3390 |
| DENNY family | Calkill / Tyr | Gen. notes | c1939 | D 3000/51 |
| DENTON family | Co. Down | Title deeds etc. | 1767 - 1932 | D 3366 |
| DENVIR Cornelius | Erenagh / Dow | Lease of land | c1831 | T 1450 |
| DEPOSITIONS | Ireland | Depositions 1641 | 1641 - 1642 | D 1923 |
| DEPOSITIONS | Ireland | Depositions 1641 | 1641 - 1642 | T 2706/8 |
| DEPOSITIONS | Ireland | Depositions 1641 | 1641 - 1642 | Mic/8/1 |
| DERRY JOURNAL | Londonderry | One edition | 17 Sept 1816 | D 1324 |
| DERRY JOURNAL | Londonderry | Early files | 1772 - 1863 | Mic 60 |
| DERRY JOURNAL | Londonderry | Files | 1864 - 1887 | Mic 60add |
| DERRY EVENING NEWS | Londonderry | 1 issue | 1515 | D 3217/19 |
| D'EVELYN family | Armoy / Ant | Inscriptions graves | 1841 - 1894 | T 2577 |
| DEVENNY James | Crowkeeragh / Don | Emig. letters | c1907 | T 3608 |
| DEVEREUX family | Culfore / Louth | Title deeds, leases | 1807 - 1820 | D 2965 |
| DEVON Alexander & Sons Ltd | Belfast | Insurance Rent Bks | 1916 - 1930 | D 3028 |
| DICK Edmonstone | Ballycarry / Ant | Will | c1848 | T 1216 |
| DICK family | Ballycarry / Ant | Title deeds | 1769 - 1850 | T 1216 |
| DICK family | Knockiniller / Tyr | Gen. table | 1841 - 1967 | T 2943/2 |
| DICK James | Knockmiller / Tyr | Lease | c1795 | T 2943 |
| DICK John | Ballycarry / Ant | Diary, acct. book | 1881 - 1885 | D 1014 |
| DICKENSON property | Shinn, Newry / Dow | Notes | c1905 | D 2531 |
| DICKEY family | Dunmore / Ant | gen. notes | c1900 | Mic 92 |
| DICKEY family | Milltown / Tyr | Gen. notes | 1768 - 1967 | T 2655 |
| DICKEY family | Ballyreagh / Ant | Pedigree | 17c - 1858 | D 2784/18 |
| DICKEY family | Cullybackey / Ant | Pedigree | 17c - 1858 | D 2784/18 |
| DICKEY family | Lisburn / Ant | Gen. notes | 1670 - 1939 | D 260add |
| DICKEY family | Portglenone / Ant | Gen. notes | from 1666 | Mic 76 |
| DICKEY family | Randalstown / Ant | Title deeds | 1811 - 1815 | T 2906 |
| DICKEY Thomas | Ballymena / Ant | Corres. Wm Boyd | 1803 - 1804 | D 1715 |
| DICKIE family | Co Londonderry | Typed notes | c1765 | T 728 |
| DICKIE family | Kings Co. | Typed notes | c1765 | T 728 |
| DICKIE or DICKE family | Co Londonderry | Pedigree | from 18c | T 2652 |
| DICKINSON Isaac | Dublin | Letters of Admin. | c1820 | T 2875 |
| DICKSON Estate | Gilford / Dow | Title deeds etc | 1700 - c1905 | D 1252 |
| DICKSON family | Anahilt / Dow | Gen. table | 1703 - 1865 | D 3000/25 |
| DICKSON family | Ballymacanallen / Dow | Titledeeds, leases | 1848 - 1893 | D 959add |
| DICKSON family | Ballyshannon / Don | Gen. notes | 1296 - c1963 | D 2081 |
| DICKSON family | Co. Down | Will Extracts | D 1759 | |
| DICKSON family | Cos. Fer,Cav,Tyr | Gen. notes | c1700 - 1914 | T 1299 |
| DICKSON family | Downpatrick / Dow | Gen. table | 1703 - 1865 | D 3000/25 |
| DICKSON family | Dromara / Dow | Gen. table | 1703 - 1865 | D 3000/25 |
| DICKSON family | Ednego / Dow | Title deeds | 1841 - 1910 | T 1963 |
| DICKSON family | Gilford / Dow | Rentals etc. | c1902 | D 2714 |
| DICKSON family | Killyleagh / Dow | Gen. table | 1703 - 1865 | D 3000/25 |
| DICKSON family | Lisburn / Ant | Gen. table | 1703 - 1865 | D 3000/25 |
| DICKSON family | Lisnaward / Dow | Gen. notes | 17c | T 1765 |
| DICKSON family | Newry / Dow | Corresp. | 1850 - 1912 | D 2081 |
| DICKSON G.W. RIC | Cos. Mon, Cav, Dow | Misc. papers | 1837 - 1853 | D 2526 |
| DICKSON George | Armagh | Saddler's accts. | c1861 - 1865 | T 2470 |
| DICKSON Hugh | Ballynahinch / Dow | Probate | c1840 | D 776 |
| DICKSON Joseph | Ladonigan / Cav | Maps | 1839 - 1844 | D 3480add |
| DICKSON Joseph | Seefin / Cav | Maps | 1839 - 1844 | D 3480add |
| DICKSON Lothian Col. | India & Africa | Military campaigns | 1835 - 1894 | D 1618 |
| DICKSON William | Ballyclander / Dow | Map | c1759 | D 2783 |
| DICKSON William | Ballyclander / Dow | Map | c1759 | T 2969 |
| DICKSON Hugh | Downpatrick / Dow | Business records | 1905 - 1959 | D 3596 |
| DICKSON James H. | Drummully East / Cav | Rent Acct. book | 1893 - 1924 | D 3480add |
| DIGENAN Rev. | Banbridge / Dow | Rent receipts | 1774 - 1779 | T 1737 |
| DIGGES J.R.G. Rev | Mohill / Leit | Biograph. notes | c1890 - 1933 | T 2981 |
| DILL Mark | Inventory of effects | c1833 | T 3227 | |
| DILL Edward Marcus | Clonakilty / Cork | Copy Will | c1862 | D 3434 |
| DILL Edward Marcus Rev. | Clonakilty / Cork | Copy Will | c1862 | T 2858 |
| DILL family | Ballykelly / Ldy | Gen. notes | 1695 - 1909 | T 2858 |
| DILL family | Portglenone / Ant | Title deeds etc. | c1800 - 1860 | D 1902 |
| DILL family | Ramelton / Don | Gen. notes | late 19c | Mic 86 |
| DILL family | Springfield / Don | Gen. notes | 1695 - 1909 | T 2858 |
| DILL family | Springfield / Don | Gen. notes | 17c | D 3000/36 |
| DILL Marcus Dr. | Ballykelly / Ldy | Copy Will | c1857 | T 2858 |
| DILL Margaret | Limavady / Ldy | Copy Will | c1890 | T 2858 |
| DILL Richard | Donaghadee / Dow | Permit to travel | c1803 | T 2060 |
| DILL Richard Rev. | Ballykelly / Ldy | Memorial | c1847 | T 2858add |
| DILLON family | Strabane / Tyr | Title deeds, etc | 1778 - 1923 | D 2609 |
| DILLON family | Gen. notes | D 1728 | ||
| DINSMORE family | Ballywattick / Ant | Notes | 1650 - c1863 | T 2733 |
| DINSMORE John | Kells / Ant | Woolen manuf. acct | 1887 - 1888 | D 859 |
| DISSENTERS | Co Down | Petitions | c1775 | T 808/14977 |
| DIXON family | Ballycastle / Ant | Gen. notes | 1770 - 1907 | D 1920 |
| DIXON Thomas Sir | Wilmont, D'murray / Ant | Inventory | c1923 | D 2371 |
| DIXON Thomas Sir | Wilmont, D'murray / Ant | Inventory | c1923 | T 2570 |
| DOAK family | Kinallen / Dow | Title deeds | 1713 - 1934 | D 1948 |
| DOAK family | Kinallen / Dow | Title deeds etc. | 1728 - 1840 | D 2630 |
| DOAK family | Kinallen / Dow | Title deeds etc. | 1739 - c1900 | D 682 |
| DOAK family | Kinallen / Dow | Title deeds | 1782 - 1880 | T 1164 |
| DOAK family | Skeagh / Dow | Title deeds | 1713 - 1934 | D 1948 |
| DOAK Robert | Kinallen / Dow | Will | c1793 | T 1164 |
| DOAK Samuel | Kinallen / Dow | Emig. letters | 1840 - 1852 | D 682 |
| DOAK Samuel | Kinallen / Dow | Will | c1849 | T 1164 |
| DOBBIN family | Boardmills / Dow | Gen. notes | 1770 - 1973 | D 3000/8 |
| DOBBIN family | Cappagh / Dow | Gen. notes | 1770 - 1973 | D 3000/8 |
| DOBBIN family | Cargaclogher / Arm | Title deeds | 1845 - 1887 | D 1524add |
| DOBBIN family | Keady / Arm | Title deeds | 1845 - 1887 | D 1524add |
| DOBBIN family | Racarbry / Arm | Title deeds | 1845 - 1887 | D 1524add |
| DOBBIN family | Tirnascobe / Arm | Pedigree | c1655 - 1938 | T 2466 |
| DOBBS family | Ballynure / Ant | Leases | 1775 - 1833 | D 2489 |
| DOBBS Property | Castle Dobbs / Ant | Title deeds | 1739 - 1917 | D 162add |
| DOBBS family | Ballyhill / Ant | Pedigree | 1603 - c1890 | T 1190 |
| DOBBS family | Belfast | Gen. notes | c1732 | D 1754 |
| DOBBS family | Carrickfergus / Ant | Pedigree | from 16c | T 2366 |
| DOBBS family | Castle Dobbs / Ant | Gen. notes | early18c - 1985 | D 3000/129 |
| DOBBS family | Charleston | Gen. notes | c1732 | D 1754 |
| DOBBS Margaret Miss | Cushendall / Ant | Correspondence | 1909 - 1957 | Mic 152 |
| DOBBS William | Carrickfergus / Ant | Sea battle cuttings | c1873 | D 2453 |
| DOBBS family | Carrickfergus / Ant | 1791 - 1886 | D 1296 | |
| DODDS Bros. Drapers | Rathfryland / Dow | Business records | 1850 - c1915 | D 2484 |
| DOGGART family | Newtownards / Dow | Title deeds | 1793 - 1832 | D 2507add |
| DOHERTY family | Belfast | Emig. letters | 1850 - 1860 | D 2585 |
| DOHERTY family | Buncrana / Don | Misc. papers | 1783 - 1957 | D 2958add |
| DOHERTY family | Mintiaghs / Don | Misc. papers | 1783 - 1957 | D 2958add |
| DOHERTY family | Muff / Don | Misc. papers | c1850 - 1950 | D 2958add |
| DOHERTY family | Redcastle / Don | Misc. papers | 1783 - 1957 | D 2958add |
| DOHERTY family | Redcastle / Don | Estate/family papers | 1798 - 1955 | D 2958add |
| DOHERTY family | Redcastle / Don | Estate/pers. papers | c1820 - c1960 | D 2958add |
| DOHERTY family | Redcastle / Don | Estate/pers. papers | c1830 - c1910 | D 2958 |
| DOHERTY James Neill | Redcastle / Don | Will | c1814 | D 2958add |
| DOHERTY Jane Moore | Co. Donegal | Will | c1882 | D 2958add |
| DOHERTY Jane Moore | Redcastle / Don | Estate settlement | 1883 - 1896 | D 2958add |
| DOHERTY Neal | Keelogues / Don | Copy Will | c1823 | D 2958add |
| DOHERTY Property | Buncrana / Don | Rent rolls / receipts | 1837 - 1851 | D 2958 |
| DOHERTY Property | Lifford / Don | Rent rolls / receipts | 1837 - 1851 | D 2958 |
| DOHERTY Property | Muff / Don | Rent rolls / receipts | 1837 - 1851 | D 2958 |
| DOHERTY Sarah | Coleraine / Ldy | Conveyance | c1893 | T 3113 |
| DOHERTY Thomas | Ballylosky / Don | Survey / valuation | c1833 | D 2958 |
| DOHERTY Philip Solicitor | Londonderry | Lease of Quarry | c1885 | D 2096 |
| DOLAN family | Gaulstown / Louth | Farm acct. books | 1801 - 1866 | T 2738 |
| DOLLING Robert H. | Tamlaght / Ldy | Title deeds, leases | 1841 - 1879 | D 3805 |
| DOLOUGHAN W.J.A. | Summerhill Farm / Dow | Acct. Book | 1906 - 1943 | D 3576 |
| DOMINICK family | Carntall / Ant | Title deeds etc. | 1827 - 1899 | D 709 |
| DONAGHADEE GAS Co. | Donaghadee / Dow | Mins. etc | 1861 - 1913 | D 1400 |
| DONAGHADEE GAS Co. | Donaghadee / Dow | Wages & Accts bk | 1861 - 1935 | Mic 88 |
| DONAGHADEE GAS Co. | Donaghadee / Dow | Accts. etc. | 1861 - 1957 | D 1772 |
| DONAGHY Edward | Tireighter / Ldy | Lease | c1820 | T 3466 |
| DONAGHY family | York St./Trafalgar St. Bel | Title deeds, leases | 1878 - 1908 | D 3480 |
| DONAL John | Clonmacash / Arm | Lease of land | c1767 | T 3656 |
| DONAL John | Clonmacash / Arm | Lease | c1767 | T 1420 |
| DONALDSON family | Castle Dillon / Arm | Gen. notes | from 17c | T 2768 |
| DONALDSON Hugh | Drumnasole / Ant | Will | c1775 | T 2590 |
| DONALDSON John | Belfast | Test. papers | c1946 | D 2233 |
| DONEGALL Earl Estate | Belfast | Title deeds | 1692, 1717 | D 3466 |
| DONEGALL Estate | Inishowen / Don | Sale details | c1811 | D 2966/48 |
| DONEGALL Lord | Inishowen | Maps | c1805 | D 2649 |
| DONEGALL Arthur Earl | Belfast | Marr. settlement | c1781 | D 1194 |
| DONEGALL Estate | Whitehouse / Ant | Title deeds | c1800 - c1850 | D 1905 |
| DONEGALL family | Belfast | Legal papers etc. | 1706 - 1715 | Mic 4B |
| DONEGALL family | Belfast | Title deeds | 1764 - 1948 | D 1809 |
| DONEGALL Lord | Ballysnod / Ant | Leases | c1825 | D 2179 |
| DONEGALL Lord | Carnduff / Ant | Leases | c1799 | D 2179 |
| DONEGALL Lord Estate | Index T'lands/occup | c1852 | D 1602 | |
| DONEGALL Marquess | Antrim / Ant | Estate Court papers | c1850 | D 3604 |
| DONEGALL Marquess | Ballyclare / Ant | Estate Court papers | c1850 | D 3604 |
| DONEGALL Marquess | Donegore / Ant | Estate Court papers | c1850 | D 3604 |
| DONEGALL Marquess | Larne / Ant | Estate Court papers | c1850 | D 3604 |
| DONEGALL Marquis Estate | Ballyearl / Ant | Court sale papers | c1852 | D 1905 |
| DONEGALL Marquis Estate | Belfast | Title deeds etc. | 1804 - 1845 | D 1255 |
| DONEGALL Marquis Estate | Belfast | Title deeds etc. | 18c - 20c | D 971 |
| DONEGALL Marquis Estate | Belfast | Rentals with Indexes | c1855 | T 1641 |
| DONEGALL Marquis Estate | Legoniel / Ant | Court sale papers | c1852 | D 1905 |
| DONNAN family | Ballynahinch / Dow | Title deeds etc. | 1812 - 1899 | D 2795 |
| DONNAN family | Saintfield / Dow | Title deeds etc. | 1812 - 1899 | D 2795 |
| DONNAN Hugh | Cahard / Dow | Emig. letters | c1849 | D 2795 |
| DONNAN John | Cahard / Dow | Emig. letters | 1848 - 1849 | D 2795 |
| DONNELL family | Strabane / Tyr | Title deeds, etc | 1778 - 1923 | D 2609 |
| DONNELL family | The Creagh / Ldy | Title deeds | 1818 - 1870 | D 2891 |
| DONNELLY E. J. | Clones / Mon | Reminiscenses | c1941 | T 3529 |
| DONNELLY family | Armagh | Legal/insur. papers | 1893 - 1921 | D 3587 |
| DONNOLLY family | Blackwatertown / Arm | United Irish League | 1912 - 1948 | D 2665 |
| DOODY family | Ballymena / Ant | Correspondence | 1844 - 1875 | D 1384 |
| DOOLITTLE Robert | Slane / Meath | Deputy Postmaster | c1799 | T 2535 |
| DOON family | Clogher / Tyr | Gen. notes | c1666 - c1910 | D 3000 /32 |
| DORAN family | Ballymoney / Dow | Title deeds | 1768 - 1889 | T 3555 |
| DORAN family | York St./Trafalgar St. Bel | Title deeds, leases | 1878 - 1908 | D 3480 |
| DORMONT family | Newtownards / Dow | Title deeds | 1692, 1748 | T 2425 |
| DORNAN family | Ballynahinch / Dow | Emig. letters | c1871 | T 1597 |
| DORNAN John Farmer | Ballyridley / Dow | Conveyance | 5th Feb 1877 | D 2966/37 |
| DORRIAN family | Kircubbin / Dow | Rental, maps | c1881 | D 2672 |
| DORRITY family | Co. Donegal | Gen. notes | c1937 | T 1575 |
| DOUGAN George | Ballymacawley / Arm | Marr. - Broomfield | 1871 | D 1127 |
| DOUGHERTY James | Marshallstown / Dow | Lease of lands | c1796 | T 1432 |
| DOUGHERTY Thomas | Co. Donegal | Will & Probate | c1847 | D 2958add |
| DOUGHLAS W.C. | Bellevue, Rostrevor/Dow | Out Letter book | 1857 - 1897 | D 2966/ 66 |
| DOUGHLASS James | Ballywillin / Ldy | Lease of lands | c1735 | T 1545 |
| DOUGLAS Estate | Derrykeighan / Ant | I. L. C. papers | T2201 | |
| DOUGLAS family | Ardinarive / Ldy | Pedigree | c 1907 | D 2547 |
| DOUGLAS family | Ballynarea / Arm | Rentals | 1848 - 1878 | D 2784/17 |
| DOUGLAS family | Bovevagh / Ldy | Gen. notes | 1687 - 1732 | D 2547add |
| DOUGLAS family | Limavady / Ldy | Family papers | 1736 - 1846 | D 2547 |
| DOUGLAS family | Lisburn / Ant | Letters | 1817 - 1863 | T 2635 |
| DOUGLAS family | Sheriff / Arm | Rentals | 1848 - 1878 | D 2784/17 |
| DOUGLAS family | Strabane / Tyr | Title deeds | 1766 - 1900 | D 2124 |
| DOUGLAS family | Tullyintisny / Mon | Rentals | 1848 - 1878 | D 2784/17 |
| DOUGLAS James | Ardinarive / Ldy | Copy Will | c 1864 | D 2547 |
| DOUGLAS John | Ballmarea / Arm | Rentals | 1879 - 1896 | D 2784/12 |
| DOUGLAS John | Craigs / Ant | Copy Will & Probate | c1856 | T 2974 |
| DOUGLAS John | Dorseymullaghglass/Ar | Rentals | 1874 - 1892 | D 2784/12 |
| DOUGLAS John | Newtownhamilton / Arm | Rentals | 1874 - 1892 | D 2784/12 |
| DOUGLAS John | Sheriff Tichburn / Arm | Rentals | 1879 - 1896 | D 2784/12 |
| DOUGLAS John | Tullintlisney / Mon | Rentals | 1879 - 1896 | D 2784/12 |
| DOUGLAS John | Tullyvallan / Arm | Rentals | 1874 - 1892 | D 2784/12 |
| DOUGLAS John Farrell | Ballybentragh / Ant | Conveyance | c1855 | T 3146 |
| DOUGLAS Rebecca | Bentra / Ant | Test. papers | c1933 | D 2233 |
| DOUGLAS /S | Ballynure / Ant | Pedigree | 1826 - 1892 | T 3146 |
| DOUGLAS Archie Teacher | Royal Belfast Institu. | Misc. papers | c1900 - 1965 | D 3190 |
| DOUGLASS George | Ballywillin / Ldy | Lease of lands | c1735 | T 1545 |
| DOW,ARM,LOUTH ADVERT | Newry / Dow | 68 volumes | 1904 - 1970 | N/4/1 |
| DOWGLASS | Co Down | Letter to Downshire | 17 Oct 1796 | D 607/D/238 |
| DOWGLASS family | Grace Hall / Ant | Gen. notes | 1662 - 1880 | T 2197 |
| DOWGLASS Thomas | Grace Hall / Dow | Conveyance | c1806 | D 1806 |
| DOWNER family | Roscrea / Tipp | Title deeds | 1748 - 1843 | T 2302 |
| DOWNER family | Roscrea / Tipp | Sale of property | 1858 - 1904 | D 2261 |
| DOWNES Elizabeth | Londonderry | m.Rev Wm Crawford | c1731 | D 2813 |
| DOWNEY family | Belfast | Gen. notes | 1890 - 1954 | D 1363 |
| DOWNEY Sarah Mrs | Ballagh / Fer | Letter to Canada | c1843 | T 3114 |
| DOWNPATRICK Recorder | Downpatrick / Dow | 25 reels micro-film | 1836 - 1900 | Mic 505 |
| DOWNPATRICK Recorder | Downpatrick / Dow | 1798 Rebellion extrs | c1838 | T1512 |
| DOWNSHIRE Estate | Co Down | Irish Land Comm | 1874 - 1916 | D 935 |
| DOWNSHIRE Estate | Dundrum / Dow | Estate papers | 1850 - 1870 | D 671add |
| DOWNSHIRE Marquess | Co Down | Maps | 1809 - 1845 | T 2538 |
| DOWNSHIRE PROTESTANT | Newspaper files | 1855 - 1862 | Mic 72 | |
| DOYLE family | Coleraine / Ldy | Test. papers | 1837 - 1936 | D 992 |
| DOYLE Jane | Dublin | Letters of Admin. | c1802 | T 2875 |
| DOYLE Patrick | Deehommed / Dow | Gen. merch. und/tker | 1869 - 1907 | D 1437 |
| DOYLE William Sgt. | Enniskillen / Fer | Good Ser. RIF 3rd B | c1904 | D 3769 |
| D'OYLEY Col. | List Gren. Gds. Comp | 1818 - 1819 | D 1340 | |
| DRAGWELL Charles Capt | Career Merch. Navy | 1867 - 1914 | T 1724 | |
| DRAPERS Company | Draperstown / Ldy | Misc. papers | 1585 - c1900 | D 3632add |
| DRAPERS Company | Moneymore / Ldy | Misc. papers | 1585 - c1900 | D 3632add |
| DRAPER'S COMPANY | Draperstown / Ldy | Corresp. | 1817 - 1905 | D 3632 |
| DRAPER'S COMPANY | Moneymore / Ldy | Corresp. | 1817 - 1905 | D 3632 |
| DRAPES family | Hermitage / Cav | Title deeds | 1780, 1828 - 1863 | D 3480add |
| DRENNAN Dr. | Dublin | Unit/Irish Activities | 1789 - 1802 | D 729 |
| DRENNAN family | Belfast | Title deeds | c1849 | D 729 |
| DRENNAN family | Carse Hall / Limavady | Misc. papers | 1859 - 1959 | D 1513add |
| DRENNAN family | Dublin | Title deeds | c1849 | D 729 |
| DRENNAN Samuel Butcher | Banbridge / Dow | Lease of Tullycar | 23 July 1806 | D 3360 |
| DRENNAN Thomas Rev. | Belfast | Corresp. | 1729 - 1746 | T 3060 |
| DRENNAN Thomas Rev. | Belfast | Corresp. | 1739 - 1761 | D 1759 |
| DRENNAN Tom | Belfast | Child's letter to mother | c1807 | T 1682 |
| DRENNAN William | Belfast | Scottish degrees | 1772 - 1778 | D 816 |
| DRENNAN William Dr. | Dublin | Letter S. Swanwick | 1793 - 1819 | T 2884 |
| DREW family | Belfast | Gen. notes | c1800 - c1913 | D 3000/37 |
| DREW family | Seaforde / Dow | Gen. notes | c1800 - c1913 | D 3000/37 |
| DRISCOLL Timothy | Dublin | Letters of Admin. | c1832 | T 2875 |
| DROMORE Bishop | Dromore / Dow | Map | c1790 | T 2372 |
| DROUGHT family | King's County | Gen. notes | late 16c - 1983 | D 3000/87 |
| DRUITT family | Ballynafeigh / Dow | Pedigree | 1879 - 1900 | D 2757add |
| DRUITT family | Belfast | Leases | 1874 - 1904 | D 1905add |
| DRUITT family | Belfast | Pedigree | 1879 - 1900 | D 2757add |
| DRUITT Julia C. | Belfast | Property papers | c1870 - 1887 | D 2757add |
| DRUMBANAGHER House | Co. Armagh | Sketch | c1800 | T 1706 |
| DRUMGOOLE Nicholas | Newry / Dow | Recoveries of land | c1734 | D 935add |
| DU PRE family | Coleraine / Ldy | Leases | late18c - early19c | D 668 |
| DU PRE Rebecca | Cullycaple / Ldy | Lease | c1791 | D 3460 |
| DUBLIN GAZETTE | Dublin | 3 issues | c1814 | D 1911add |
| DUBLIN RECORD | Dublin | 60 editions | 1837 - 1839 | D 1391 |
| DUBLIN EVENING MAIL | Dublin | With supplement | c1826 | T 1852 |
| DUBLIN EVENING POST | Dublin | Files | 1734 - 1738 | Mic 19/4 - 14 |
| DUBLIN EVENING POST | Dublin | List opposing union | c1800 | T 2344 |
| DUBLIN PENNY JOURNAL | Dublin | Edition | 1832 - 1833 | D 2050 |
| DUBORDIEU family | Moira / Dow | Family bible extracts | 1820 - 1890 | D 2838add |
| DUBORDIEU John Rev. | Rathfryland / Dow | Tithe dispute | c1883 | D 2672 |
| DUBOURDIEU family | Lisburn / Ant | Gen. notes | c1677 - c1924 | D 2404 |
| DUBOURDIEU family | Ireland, England, France | Pedigree | 1693 - 1945 | T 1167 |
| DUCHAL James Rev. | Antrim / Ant | Corresp. | 1739 - 1761 | D 1759 |
| DUDGEON family | Mullaghmore / Tyr | Gen. notes | from 17c | T 2318 |
| DUDLEY-JAMES S.F. Rev | South Antrim | Hist. notes Par. regs | late 19c | D 1532 |
| DUFF Bros. Spinners | Coagh / Tyr | Business records | 1867 - 1911 | D 3036 |
| DUFF family | Curglasson / Tyr | Renewal of lease | c1795 | D 1140add |
| DUFF family | Mullaghwotragh / Tyr | Gen. notes | 18c - 20c | T 3716 |
| DUFF John | Drumconvis / Tyr | Letter | 21 Mar 1819 | T 3102add |
| DUFF John | Drumconvis / Tyr | Letters to Philadelphia | c1819 | T 2252 |
| DUFFERIN Marchioness | Clandeboye / Dow | Estate papers | late17c - early19c | D 1071 |
| DUFFERIN Estate | Bangor / Dow | Title deeds etc. | 1622 - 1900 | D 2223 |
| DUFFERIN Estate | Clandeboye / Dow | O S Map | c1901 | D 2598 |
| DUFFERIN Estate | Killyleagh / Dow | Title deeds etc. | 1622 - 1900 | D 2223 |
| DUFFERIN Estate | Newtownards / Dow | Title deeds etc. | 1622 - 1900 | D 2223 |
| DUFFERIN Marquess | Letter re Keats | 1889 | T 2217 | |
| DUFFERIN & AVA Papers | Mics. papers | 1931 - 1940 | D 1071add | |
| DUFFERIN & AVA Papers | Bangor / Dow | Misc. papers | c1760 - 1930 | D 1071add |
| DUFFERIN & AVA Papers | Bangor / Dow | Misc. papers | c1760 - 1930 | T 3636add |
| DUFFIN Adam | Summer Hill / Belfast | Speeches to Senate | 1921 - 1922 | D 1216 |
| DUFFIN Adam Mrs | Comber / Dow | Reminiscences | c1948 | T 3023 |
| DUFFIN family | Ballyminetragh / Dow | Title deeds etc | 1672 - 1825 | D 729 |
| DUFFIN family | Belfast | Misc. family papers | 1794 - 1960 | D 2109add |
| DUFFIN family | Belfast | Emigrant corresp. | 1826 - 1828 | T 1252 |
| DUFFIN family | Belfast | Title deeds etc. | 1859 - 1924 | D 2489add |
| DUFFIN family | Belfast | Title deeds | from c1870 | D 1905 |
| DUFFIN family | Broughshane / Ant | Title deeds etc | 1672 - 1825 | D 729 |
| DUFFIN family | Broughshane / Ant | Pedigree | 1690 - 1965 | D 2040 |
| DUFFIN family | Broughshane / Ant | Corresp. burials | 1885 - 1928 | T 1252 |
| DUFFIN family | Cabin Hill / Dow | Title deeds etc | 1672 - 1825 | D 729 |
| DUFFIN family | Drumbeg / Ant | Title deeds | from c1870 | D 1905 |
| DUFFIN family | Dungannon / Tyr | Pedigree | 1690 - 1965 | D 2040 |
| DUFFIN family | Killybegs / Don | Title deeds | 1868 - 1934 | D 1959 |
| DUFFIN family | Newcastle / Dow | Misc. family papers | 1794 - 1960 | D 2109add |
| DUFFIN family | Strandtown / Belfast | Title deeds | 1836 - 1895 | D 816 |
| DUFFIN family | Tullymore / Ant | Title deeds etc | 1672 - 1825 | D 729 |
| DUFFIN family | Gen. notes | D 1725 | ||
| DUGAN family | Mountpottinger / Belfast | Bus/Fam. records | 1870 - 1950 | D 3052 |
| DUGGAN family | Drumcullion / Fer | Release of lands | c1874 | D 990 |
| DUGGAN family | Dungiven / Ldy | Emig. letter | c1848 | T 2946 |
| DUGGAN Isabella Mrs. | Drumcullion / Fer | Test. papers | c1909 | D 990 |
| DUNBAR Estate | Millisle / Dow | Map | c1797 | T 1242 |
| DUNBAR family | Woburn Ho. / Dow | Misc. Corresp. | c1823 - c1902 | D 664 |
| DUNBAR George | Woburn, Millisle / Dow | Misc. papers | c1828 | D 664add |
| DUNBAR Robert | Drumnagally / Dow | Conveyance | c1785 | T 1507 |
| DUNBAR W. I. | Knock / Dow | Gun Licence | c1891 | D 1404 |
| DUNBAR McMASTER & Co | Gilford / Dow | Notes | 1805 - 1867 | D 2714 |
| DUNCAN family | Ballyblack / Dow | Gen. notes | 1802 - 1867 | T 2285 |
| DUNDAS Canon | Magheragall / Ant | Corresp. legal papers | 1925 - 1933 | D 1192 |
| DUNDAS Canon | Magheragall / Ant | History of Parish | c1930 | T 1349, 1398 |
| DUNDAS family | Rosscor / Fer | Gen. notes | from 17c | T 2615 |
| DUNDAS W.H. | Magheragall / Ant | History of Parish | c1930 | D 2686 |
| DUNDAS W.H. Rev. | Co. Fermanagh | Notes | c1600 - c1900 | T 3663 |
| DUNDAS W. H. Canon | Magheragall / Ant | Parish history | 1641 - 1931 | T 1398add |
| DUNDASS James | Carrowmore / Fer | Will transcript | c1777 | T 3663 |
| DUNDASS John | Carrowmore / Fer | Will transcript | c1769 | T 3663 |
| DUNDASS John Rev. | Gola / Fer | Will transcript | c1764 | T 3663 |
| DUNDEE family | Ballylinny / Ant | Pedigree | 1712 - 1942 | T 1199 |
| DUNDEE Isabel | Fortwilliam Park / Belfas | 2 exercise books | 1914 - 1918 | D 3140 |
| DUNDRUM Linen Mill | Keady / Arm | Accts. etc. | c1870 - c1900 | D 1257 |
| DUNGANNON NEWS | Dungannnon / Tyr | 20 editions | 1905 - 1906 | D 1813 |
| DUNGANNON Viscount Est. | Belvoir / Dow | Rentals & accts. | 1818 - 1932 | D 1954 |
| DUNGANNON Viscount Est. | Belvoir / Dow | Rental ref. bk. | c1857 | D 1602 |
| DUNGANNON Viscount Est. | Carrickfergus / Ant | Town & County map | c1821 | D 1954 |
| DUNGANNON Viscount Est. | Dromore / Dow | Rentals & accts. | 1818 - 1932 | D 1954 |
| DUNGANNON Viscount Est. | Dromore / Dow | Estate Map | c1821 | D 1954 |
| DUNGANNON Viscount Est. | Dromore / Dow | Rental ref. book | c1857 | D 1602 |
| DUNGANNON Viscount Est. | Drummiller / Dow | Rentals & accts. | 1818 - 1932 | D 1954 |
| DUNGANNON Viscount Est. | Holywood / Dow | Rentals & accts. | 1818 - 1932 | D 1954 |
| DUNGANNON Viscount Est. | Island Magee / Ant | Rentals & accts. | 1818 - 1932 | D 1954 |
| DUNGANNON Viscount Est. | Island Magee / Ant | Rental ref. bk. | c1857 | D 1602 |
| DUNGANNON Viscount Est. | Magheralin / Dow | Rental ref. bk. | c1857 | D 1602 |
| DUNGANNON Viscount Est. | Raloo / Ant | Rentals & accts. | 1818 - 1932 | D 1954 |
| DUNGANNON Viscount Est. | Raloo / Ant | Estate Map | c1821 | D 1954 |
| DUNGANNON Viscount Est. | Raloo / Ant | Rental ref. bk. | c1857 | D 1602 |
| DUNGANNON GAS Co. | Dungannon / Tyr | Mins. accts. | 1835 - 1960 | D 1761 |
| DUNGANNON Sophia V'ctess | Dungannon / Tyr | Probate copy will | c1880 | D 2532 |
| DUNLAP family | Gracehill / Ant | USA connections | c1972 | T 2790add |
| DUNLAP family | Strabane / Tyr | Title deeds etc. | 1747 - 1803 | T 1336/1 |
| DUNLAP John | Strabane / Tyr | Will | c1780 | T 1336/1 |
| DUNLOP Allen | Ballywillin / Ant | Copy Will | c1894 | D 945add |
| DUNLOP Charles | Edenderry / Dow | Will | c1817 | T 2128 |
| DUNLOP Estate | Mount Hamilton / Ant | Title deeds | from c1850 | T 2201 |
| DUNLOP family | Co Antrim | Gen. tables | 1665 - 1977 | T 2790add |
| DUNLOP family | Co Armagh | Gen. tables | 1665 - 1977 | T 2790add |
| DUNLOP family | Co. Antrim | Gen. notes | c1890 | T 2967 |
| DUNLOP family | Drumhirk / Arm | I.L.C. papers | 1870 - 1938 | D 2784/12 |
| DUNLOP family | Hillhall / Dow | Corresp. | 1826 - 1831 | T 1799 |
| DUNLOP family | Iskymeadow / Arm | I.L.C. papers | 1870 - 1938 | D 2784/12 |
| DUNLOP family | Killyreavy / Arm | I.L.C. papers | 1870 - 1938 | D 2784/12 |
| DUNLOP family | Londonderry | Correspondence | 1861 - 1961 | D 1679 |
| DUNLOP family | Tullynamallogre / Arm | I.L.C. papers | 1870 - 1938 | D 2784/12 |
| DUNLOP Isabella Mrs | Killyreavy / Arm | Test. papers | c1902 | D 3152add |
| DUNLOP Isabella Mrs | Tullynamalloge / Arm | Test. papers | c1902 | D 3152add |
| DUNLOP James | Daisyhill / Arm | Copy Will | c1805 | T 1769 |
| DUNLOP Robert | Clough / Ant | History of Parish | 1825 - 1875 | T 2815 |
| DUNLOP Charles Estate | Edenderry / Dow | Map | 1811 - 1817 | T 2128 |
| DUNLOP Charles Estate | Edenderry / Dow | Rent Acct. book | 1842 - 1859 | Mic 89 |
| DUNLOP Elizabeth Estate | Ballyaghlis / Dow | Abstract of title | 1672 - 1918 | T 2248 |
| DUNLOP Elizabeth Estate | Ballyaghlis / Dow | Map | c1851 | T 2248 |
| DUNLOP Elizabeth Estate | Ballylesson / Dow | Abstract of title | 1672 - 1918 | T 2248 |
| DUNLOP Elizabeth Estate | Drumbo / Dow | Abstract of title | 1672 - 1918 | T 2248 |
| DUNLOP Elizabeth Estate | Edenderry / Dow | Abstract of title | 1672 - 1918 | T 2248 |
| DUNN family | Ballykelly / Ldy | Misc. papers | 1701 - 1853 | D 2908 |
| DUNN family | Ballyspallan / Ldy | Leases | 1701 - 1853 | D 2908 |
| DUNN family | Ballyspallan / Ldy | Title deeds | 1821 - 1929 | D 2256 |
| DUNN family | Co Londonderry | Pedigree | c1618 - c1950 | T 2964 |
| DUNN family | Cookstown / Tyr | Corresp. | c1820 - c1900 | D 2008 |
| DUNN family | Drumadd / Arm | Leases etc. | 1860 - 1899 | D 1654 |
| DUNN family | Largantea / Ldy | Leases | 1701 - 1853 | D 2908 |
| DUNN family | Tartnakilly / Ldy | Leases | 1701 - 1853 | D 2908 |
| DUNN George Newman | Drumany More / Fer | Rentals, etc | c1876 | D 3740 |
| DUNN George Newman | Gortgullenan / Fer | Rentals, etc | c1876 | D 3740 |
| DUNN George Newman | Gubbaroe / Fer | Rentals, etc | c1876 | D 3740 |
| DUNN George Newman | Mullynahinshin / Fer | Rentals, etc | c1876 | D 3740 |
| DUNN Joseph | Cookstown / Tyr | Will | c1897 | T 3613 |
| DUNN Joseph | Drumflugh / Tyr | Administration | c1885 | D 1643 |
| DUNN Robert | Ballyspallan / Ldy | Will | c1837 | D 2908 |
| DUNSTERVILLE family | Londonderry | gen. notes | c1900 | Mic 92 |
| DUNVILLE family | Belfast | Title deeds | from c1805 | D 1905 |
| DUNVILLE John D. | Reburn, H'wood / Dow | Deed poll / ú15,000 | c1918 | D 3855 |
| DURHAM St. WEAVING Co. | Belfast | Accts, order bks. | 1887 - 1947 | D 1183 |
| DURHAM St. Weaving Co. | Belfast | Business records | 1884 -- 1963 | D 2202add |
| DYNES John | Cloncore / Arm | Census | c1851 | T 3357 |
| DYOTT Estate | Antrim / Ant | Title deeds etc. | 1712 - 1923 | D 2223 |
| DYOTT Estate | Portglenone / Ant | Title deeds etc. | 1712 - 1923 | D 2223 |
| DYOTT R. A. Major | Greenmount / Belfast | Rentals | from 1907 | D 2122 |
| DYOTT Richard | Mount Stafford / Ant | Maps | c1862 | D 2122 |
| DYSART family | Craigs / Ant | Title deeds etc. | c1840 | D 1902 |
| DYSART family | Dungannon / Tyr | Title deeds, leases | 18c - 19c | D 847 |