| 14158 | Ardagh and Clonmacnoise Diocesan Archives (RC) | | 1870 | Letter no 233 From P. Dawson, Carrick-On-Shannon, co... | McCabe Papers |
| 14214 | Ardagh and Clonmacnoise Diocesan Archives (RC) | | 1870 | Letter no 232 From Lord Granard, expressing great t... | McCabe Papers |
| 14222 | Ardagh and Clonmacnoise Diocesan Archives (RC) | | 1870 | Letter no 265 From J. Reynolds, Longford, stating th... | McCabe Papers |
| 14371 | Ardagh and Clonmacnoise Diocesan Archives (RC) | | 1871 | Letter no 67 From 'Willie', St Mary's College, Dun... | Conroy Papers |
| 16214 | Birr Castle Archives | A-W | 1870 | M/18: Quarto recipe book kept by Miss Edith Cromer, ... | The Rosse Papers |
| 16802 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1870-1871 | Church of Ireland Treasurer's Account Book, Cashel, ... | Bolton Library Archive |
| 13198 | Cork Public Museum | AQNO1945:14 | 1871 | 'The emancipation of women' by J.W. Bourke, ... | |
| 19049 | Cultural Heritage Services Library, Armagh | | 1871-1971 | Bound extracts of the census of Ireland relating to ... | |
| 3157 | Dún Laoghaire-Rathdown County Council | LA1/304 | 1870 | Housing of the Working Classes: Copy of will of Tere... | Blackrock |
| 3093 | Dún Laoghaire-Rathdown County Council | LA1/ | 1871 | 198 Notice of rate having been struck, 11 September ... | Blackrock |
| 20434 | Dún Laoghaire-Rathdown County Council | | 1870 | Manuscript note to the Secretary, Blackrock Township... | Records of Dean's Grange Joint Burial Board |
| 19902 | Erasmus Smith Schools Archives | | 1870 | Letters; marks books; address books; registers; admi... | Erasmus Smith Archives |
| 20465 | Galway County Council Archives | | 1915-1931
1870
1954
1978 | UDC Revised Valuation List:19781915-193118701954 | Ballinasloe Urban District Council & Town Commissioners |
| 12374 | Kilmainham Gaol Museum | 7MS-1B31-8 | 1870 | Blank dance card, Fenian Brotherhood Social Dance, B... | Fenians and Obstructionism |
| 13195 | Limerick Museum | AQNO (1987.277) | 1870 | Map, Ordance Survey, City of Limerick, 1870, Extent... | |
| 20607 | Meath Local Studies and Family History Department | Box E/ | 1871 | 18 Lease of land to Peter Lynch at Carriagagh [Moyna... | Mountainstown Documents |
| 20610 | Meath Local Studies and Family History Department | Box E/ | 1871 | 21 Lease of land to Peter Ledwich at Rathlaggan by S... | Mountainstown Documents |
| 4002 | National Archives of Ireland | 1075/28/3 | 1870 | Miscellaneous Monsell Documents: Foreign Office Lond... | |
| 8867 | National Archives of Ireland | 1045/4/8/4 | 1870 | Correspondence, Deeds, Testamentary Documents, Costs... | Protestant Orphan Society |
| 13197 | National Archives of Ireland | CRF1871 S3 | 1871 | Petition of Eliza Sullivan, servant, Wexford town, s... | Convict Reference Files, 1836-1922 |
| 15371 | National Archives of Ireland | 99/56/10/14/13 | 1870 | Papers relating to King's County. Memo by John S. To... | Family and estate records. 1611-1948 |
| 15372 | National Archives of Ireland | 99/56/10/14/14 | 1870 | Papers relating to King's County. Copy settlement on... | Family and estate records. 1611-1948 |
| 15379 | National Archives of Ireland | 99/56/10/21/3 | 1870 | Papers relating to King's County. Grant forever by L... | Family and estate records. 1611-1948 |
| 15381 | National Archives of Ireland | 99/56/10/22/2 | 1871 | Papers relating to King's County. Deed appointing ne... | Family and estate records. 1611-1948 |
| 15410 | National Archives of Ireland | 99/56/10/40/2 | 1870 | Papers relating to King's County. Grant for lives by... | Family and estate records. 1611-1948 |
| 15559 | National Archives of Ireland | 999/173/1 | 1870 | Photocopy of report of John Patrick Prendergast, bar... | Small Private Accessions |
| 15591 | National Archives of Ireland | 999/198/1 | 1871 | Copy typescript will of Charlotte Mollan, Dublin Cit... | Small Private Accessions |
| 1536 | National Library of Ireland | Ms2728 | c.1870 | Photostat copy of a notebook of 'Eva' of the... | |
| 3480 | National Library of Ireland | Ms10762 | 1870 | Thirty letters to Revd. Canon Thomas Pope, 1870 and ... | F.S. Bourke Collection |
| 9228 | National Library of Ireland | Ms14230 | 1870 | Collecting book for the poor rate in the electoral d... | Leslie Papers |
| 9568 | National Library of Ireland | Ms29770(133) | 1870 | Appointment under the power of a marriage settlement... | Doyne Papers |
| 10035 | National Library of Ireland | Ms17717 | 1870-1871 | Bills and receipts relating to the purchases of pers... | |
| 10974 | National Library of Ireland | Ms22932 | 1871 | Autograph letter from Aubrey de Vere to Mrs Hewitt s... | |
| 21393 | Our Lady's Hospital, Cork | | 1870 | Centre building plan showing female and male admissi... | |
| 21412 | Our Lady's Hospital, Cork | | 1870 | Newspapercuttings Book, c.1870s. | |
| 6775 | Public Record Office of Northern Ireland | D/2199 | 1871 | Genealogical notes on the Johnston family of Kilmore... | |
| 6777 | Public Record Office of Northern Ireland | D/2204/ | 1867
1871 | D/2204/16 and D/2204/18-19 3 letters to Mrs Akinson,... | |
| 7172 | Public Record Office of Northern Ireland | D/3009 | c.1870 | Photograph album of the Sproule family, Carrickfergu... | |
| 7526 | Public Record Office of Northern Ireland | D/713/7 | 1871 | Draft statement as to murder of Eliza Jane Kane, Col... | McLaughlin Papers |
| 7542 | Public Record Office of Northern Ireland | D/885/8-9; D/885/13 | 1870-1871 | Emigrant letters from Mary Hanlon in New York, and l... | Hanlon Papers |
| 870 | Religious Society of Friends in Ireland Historical Library | Albums 1-40 | 1870-1871
1874-1914
1893-1900
1946-1948
1909
1912
1925 | Albums 2-3 Commissioners of the Friends War Victims... | Photographic Collections |
| 1437 | Religious Society of Friends in Ireland Historical Library | Portfolio 36E | 1870 | Clibborn Letters: Letters of Edie Clibborn concernin... | Handlists/Portfolio |
| 4158 | Religious Society of Friends in Ireland Historical Library | Deed Box IX/Folder 7:27-2 | 1871 | Elizabeth T Chandlee: Apprenticed to Charlotte MacDo... | Deeds |
| 2166 | Representative Church Body Library | Ms373 | c.1870 | Plates from George Petrie's Christian Inscriptio... | Margaret Stokes |
| 22093 | Representative Church Body Library | B10 | 1864
1865
1866
1870 | Diocese of Cork and Ross Visitation Books, Vicar Gen... | St Fin Barre's Cathedral Cork Archive |
| 22095 | Representative Church Body Library | B10 | 1867
1868
1869
1870 | Rural Deans' Returns for the Diocese of Cloyne:1... | St Fin Barre's Cathedral Cork Archive |
| 22096 | Representative Church Body Library | B10 | 1867
1868
1869
1870 | Rural Deans' Returns for the diocese of Cork and... | St Fin Barre's Cathedral Cork Archive |
| 10274 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5098/1-17 | 1681
1825
1829
1871
1895 | Includes: Typescript copy of a letter of Lady France... | |
| 3635 | UCC Special Collections & Archives | U34 | 1870 | Letter from Mrs May Dykes, Tower Leith, Scotland, to... | |
| 19308 | Westmeath County Archives Department | | 1870 | 108 James Murtagh and Anthony Dunne to Mrs Mary Col... | Howard Bury Papers |