As well as being the official archive for public records in Northern Ireland, PRONI are the proud custodians of significant private deposits.
You can access introductions to many of our significant private deposits online by using the search function in the eCatalogue and searching for the PRONI archive reference, where you will be able to view the introduction in the description.
The below table is an index of private deposits with these introductions and their corresponding archive references. The index is organised A-Z, typically by surname if the archive is named after an individual.
A
| Collection | PRONI Archive Reference(s) |
| Abercorn Papers | D623 |
| Adair of Loughanmore Papers | D3860 & MIC553 |
| Aiken McClelland Papers | D3815 |
| Aldborough Papers | T3300/13 |
| Allison Papers | D2886 |
| Andrews' Family Papers | D3655 |
| Andrews' Mill Papers | D4189 |
| Anglesley Papers | D619 |
| Annesley Papers | D1503, D1854, MIC538 and T3774 |
| Earl of Antrim Estate Papers | D2977 |
| Armagh Diocesan Registry Archive | DIO/4, T729, T848, T1056, T1066, T1067 and MIC2 |
| J.B. Armour Papers | D1792 |
| Armstrong of Deans Hill Papers | D3727 |
| Armstrong of Lisgoole Papers | D4073 |
| Annaghmakerrig Papers | D3585 |
| Ashbourne Papers | T2955 and MIC264 |
B
| Collection | PRONI Archive Reference(s) |
| Barrett Lennard Papers | D1232 and MIC170 |
| Bath and Brownlow Estate Papers | D4141 and D1928 |
| J.C. Beckett Papers | D4126 |
| Belmore Papers | D3007 |
| Primate Beresford Papers | D664, D3278 and T2772 |
| RDC Black Papers | D4115 |
| Blaney of Castleblayney Papers | D1421, D1406 and D971 |
| Bradford Papers | D4211 |
| Brownlow Papers | D1928 |
| Bunbury Papers | MIC238, T3795 and T3048B |
C
| Collection | PRONI Archive Reference(s) |
| Calendon Papers | D2431 |
| Campbell Allen Papers | D1558 |
| Arthur Campbell Papers | D4122 |
| Carson Papers | D1507 |
| Castlereagh Papers | D3030 |
| Castle Stewart Papers | D1618 |
| Chatsworth Papers | T3158 |
| Cherry Papers | D2166 |
| Clanmorris Papers | D4216 |
| Clanwilliam/Meade Papers | D3044 |
| Clogher Diocesan Records | DIO RC/1 and DIO2 |
| Congregational Union of Ireland Archive | CR/7/1 |
| Cooper Collection | D1422 |
| Coopershill Papers | D4031 and MIC603 |
| Crawford Papers | D2003 |
| Conolly Papers | D2094, D1062/1, D663, T2825 and MIC435 |
| Craigavon Personal Papers | D1415 |
| Craigavon Political Papers | T3775 |
D
| Collection | PRONI Archive Reference(s) |
| Dartrey Papers | D3053 |
| De Ros Papers | D638 and MIC573 |
| Despard Papers | D2479 |
| Dobbs Papers | D162 |
| Downshire Papers | D607 and D671 |
| Drapers' Company Estate Archive | D363 |
| Dufferin Papers | D1071, D1231 and MIC22 |
| Dunlap/Delap Papers | T1336 |
| Dunleath Papers | D1167 and D4179 |
E
| Collection | PRONI Archive Reference(s) |
| Ellis Papers | D683 |
| Ely Papers | D496, D537, D535, D580[part], D962, D106/45, D3130, D3805, T1041/20, T2904, LR1/9/4A/13, LR1/9L/1-4, LR1/980/3 and LR1/1251/1 |
| Emerson Tennent Papers | D2922 |
| Enniskillen Papers | D1702, D3689 and T2074 |
| Erne Papers | D1939 |
| Irish Evangelical Society Archive | CR/7/2 |
F
| Collection | PRONI Archive Reference(s) |
| Falls & Hanna Papers | D1390 |
| Farnham Papers | D3975 |
| Fitzgerald Papers | T3075 |
| Fortescue of Drumiskin Estate Papers | D4074 |
| Foster/Masserene Papers | D207, D562, D1739 and D4084 |
G
| Collection | PRONI Archive Reference(s) |
| Gordon Family Papers | D4202 |
| Gosford Papers | D1606 and D2259 |
| Graham Papers | D812, D305 and T3263 |
| Greer, Lowry and Alexander Papers | D645 and D1035 |
H
| Collection | PRONI Archive Reference(s) |
| Harberton Papers | T2954 |
| Harland & Wolff Papers | D2805 |
| Harshaw Papers | D4149 |
| Hart Papers | D3077 |
| Cahir Healy Papers | D2991 |
| Hervey/Bruce Papers | D2798, D1514 and T2960 |
| Higginson Papers | D3590 |
| Hill of Brook Hall, Londonderry Papers | D642 |
| Howard Bury Papers | T3069 |
| Hume Papers | D2765 |
| John Hewitt Papers | D3838 |
I
| Collection | PRONI Archive Reference(s) |
| Irish Encumbered Estate Papers | D1201 |
| Irish Football Association Papers | D4196 |
| Irish Rugby Football Union (Ulster Branch) Papers | D3867 |
J
| Collection | PRONI Archive Reference(s) |
| Johnston of Ballykilbeg Papers | D880 |
| Judge William Johnson Papers | D4022 |
K
| Collection | PRONI Archive Reference(s) |
| Kenmare Papers | D4151 |
| Ker Papers | D2651 |
| Kilmorey Papers | D2638 |
| King-Harman Papers | D4168 |
| Kirkpatrick Papers | D1424 |
L
| Collection | PRONI Archive Reference(s) |
| Theresa, Lady Londonderry Papers | D2846 |
| Leinster Papers | D3078 |
| Lenox-Conyngham Papers | D1449, D501, T3161 and T406 |
| Leslie Papers | MIC606 and T3827 |
| Lissadell Papers | D4131 |
| Londonderry Estate Office Archive | D654 |
| 7th Marquess of Londonderry Papers | D3099 |
M
| Collection | PRONI Archive Reference(s) |
| MacGeough Bond Papers | D288 |
| Macartney Papers | D572, D1062/2, D2225 and D2731 |
| Madden Papers | D3465, MIC388, MIC441 and MIC594 |
| Martin & Brett Archive | D3406 |
| McCance Papers | D272 |
| McFarland Papers | D3703 |
| McPeake Papers | D3736, T3048 and T3071/1-T3071/2 |
| Harry Midgley Papers | D4089 |
| Montgomery Hyde Papers | D3084 |
| Murray of Broughton Papers | D2860 |
| Mussenden Papers | D354 |
| Schomberg MacDonnell Papers | D4091 |
N
| Collection | PRONI Archive Reference(s) |
| NI Cricket Union of Ireland Papers | D4213 |
| Normanton Papers | T3719 |
| Nugent of Farren Connell Papers | D3535 |
| Nugent of Portaferry Papers | D552 |
O
| Collection | PRONI Archive Reference(s) |
| O'Hagan Papers | D2777 |
| O'Rorke, McDonald & Tweed Archive | D1242 |
P
| Collection | PRONI Archive Reference(s) |
| Perceval-Maxwell Papers | T1023, D1556, D2480, D3244, D3817 and D4218 |
| Pinkerton Papers | D1078 |
| Porter Papers | D1390/10, N/19 and LR1/178/1 |
Q
| Collection | PRONI Archive Reference(s) |
| Qua Iboe Missionary Papers | D3301 |
R
| Collection | PRONI Archive Reference(s) |
| Ranfurly Papers | D235, D1932 and D4183 |
| Rathdonnell Papers | D4132 and MIC632 |
| Redhall Papers | D3580 |
| Richmond Papers | MIC336 and T3415 |
| Rosse Papers | MIC512, MIC564 and T3498 |
| Rossmore Papers | T2929 |
| W.R. Rodgers Papers | D2833 |
S
| Collection | PRONI Archive Reference(s) |
| Lady Spencer's Diaries | D1633 |
| E.J. Saunderson Papers | T2996 and MIC281 |
| Salters' Papers | D4108 |
| Shannon Papers | D2707 |
| Shirley Papers | D3531 |
| Sir Douglas Savory Papers | D3015 |
| McPeake Papers | D3736, T3048 and T3071/1-T3071/2 |
| Smiles Papers | D3427 |
| Spender Papers and Diaries | D715, D1295 and MIC559 |
| Staples Papers | D1567 |
| Stewart of Killymoon Papers | D3167 and D2966/92/B |
| Stewart of Tyrcallen Papers | D3319 |
| Stewart-Bam Papers | D4137 and D2784/19 |
T
| Collection | PRONI Archive Reference(s) |
| Talbot/Gregory Papers | D4100 |
| Templehouse Papers | MIC597 |
| Tighe Papers | D2685 |
| Tipping Papers | D4160 |
| Treasury Solicitor Papers | TSD/1 |
| Trench Papers | D4141 |
| Turner Papers | D4123 |
U
| Collection | PRONI Archive Reference(s) |
| Ulster Gift Fund Papers | D912 |
| Ulster Unionist Archive | D1327 |
| Ulster Women's Unionist Council Papers | D1098 |
V
| Collection | PRONI Archive Reference(s) |
| Verner/Wingfield Papers | D2538 |
| Villiers-Stuart Papers | MIC464 and T3131 |
W
| Collection | PRONI Archive Reference(s) |
| George Wyndham Papers | T3221 |
| Sir Robert Wilmot Papers | T3019 |
| Ward Papers | D2092, D3735 and 4216 |
| Waring Papers | D695 |
| Weir Papers | D1140 |
| Wynne Papers | D429 |
Y
| Collection | PRONI Archive Reference(s) |
| Young of Culdaff Papers | D3045 |