| 13018 | Armagh County Museum | 1938/131 | 1770 | Balance sheet and letter, paper, 'Mrs Anne Rose in a... | |
| 13836 | Armagh County Museum | 1960/53 | c.1770 | Oil portrait of Mrs Peter Gervais, c.1770. Mrs Gerva... | |
| 13837 | Armagh County Museum | 1960/164 | c.1770-1845 | Schedule of leases, Charlemont estate, from c.1770-1... | |
| 7641 | Armagh Robinson Library | KE/IV/22 | 1770 | A one volume list of inhabitants of the town of Arma... | |
| 16174 | Birr Castle Archives | A-W | 1770-1793 | H/38: 3 envelopes of affectionate letters to 2nd Ear... | The Rosse Papers |
| 16195 | Birr Castle Archives | A-W | 1770
1785
1799 | H/64: Miscellaneous correspondence which includes re... | The Rosse Papers |
| 16175 | Birr Castle Archives | A-W | 1770-1798 | H/39: 3 envelopes of letters from Lady Hawke to Lord... | The Rosse Papers |
| 16861 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1770-1799 | Lismore Estate:Rent Roll of the Right Honourable Lor... | Bolton Library Archive |
| 13019 | Cork City and County Archives | U340 | 1770-1922 | Leases, etc., dealing with Cork property, Dunscombe&... | Dowman Deposit |
| 23276 | Cork City and County Archives | U340 | 1770-1922 | 23 documents relating to the rectory of Litter and F... | Dowman Deposit |
| 11809 | Donegal County Archives | | 1767-1770 | Register of Deeds, 1767-1770, original manuscript an... | |
| 21906 | Galway Diocesan Archives (RC) | | 1770-1773
1780-1820 | Box 5 Warden John Joyce papers 1770-1773. | |
| 20216 | Meath Local Studies and Family History Department | Box I/ | 1770 | 25(a) Final agreement between Thomas Bligh and Georg... | Mountainstown Documents |
| 13020 | Mercy International Centre | | 1770-1996 | Box listing for archival materials:Early Years of Ca... | |
| 10017 | National Archives of Ireland | | 1770 | Reward of £50 for apprehending, etc., William ... | Printed Proclamations |
| 1009 | National Library of Ireland | Mss13000-13008 | 1770-1899 | Papers of the Otway family, Castle Otway, near Nenag... | |
| 1696 | National Library of Ireland | Ms10250 | 1770 | Rules for pupils in Old Townley Hall School, 1770, w... | Townley Hall Papers |
| 1962 | National Library of Ireland | Ms4713 | 1770-1771
1836-1847 | A notebook containing material on the Quaker school ... | |
| 2695 | National Library of Ireland | Ms8288 | 1770-1848 | Chancery Court proceedings on behalf of Margaret Dod... | |
| 3018 | National Library of Ireland | Ms9623 | 1770 | Copy of the marriage settlement of Lieutenant Colone... | Clements Papers |
| 3530 | National Library of Ireland | Ms11920 | c1716-1770 | Miscellaneous accounts of Hamilton and Blayney Townl... | Townley Hall Papers |
| 9273 | National Library of Ireland | Ms15783(1-3) | 1770-1795 | List of Lord Erne's fee farm rents received by Dean ... | |
| 10658 | National Library of Ireland | Ms16707-16708 | 1756-1770 | Two Receipt Books of Charles O'Hara, the Elder and L... | O'Hara Papers |
| 11052 | National Library of Ireland | Ms18798 | c1770 | Draft of agreement concerning purchase by Revd. Fran... | Straford Papers |
| 8586 | Public Record Office of Northern Ireland | T/389/1 | 1770 | A copy of a list of inhabitants of the town of Armag... | |
| 6691 | Public Record Office of Northern Ireland | D/1920 | 1770-1927 | This collection of 11 documents includes: Bound note... | |
| 6724 | Public Record Office of Northern Ireland | D/2052 | 1770-1880 | c.40 documents including title deeds, testamentary p... | |
| 7490 | Public Record Office of Northern Ireland | D/4168 | 1770-1872 | The papers of the King-Harman family of King House a... | |
| 7761 | Public Record Office of Northern Ireland | MIC/246 | 1760s-1770s | Microfilmed copies of typed copies of the social cor... | |
| 7922 | Public Record Office of Northern Ireland | T/1228/1-4 | 1770-1849 | T/1228/1 Typescript copy of a list of inhabitants o... | |
| 7954 | Public Record Office of Northern Ireland | T/1316/1 | 1770-1956 | Genealogical notes relating to the Wilson family of ... | |
| 7964 | Public Record Office of Northern Ireland | T/1345/2 | 1750-1885
1672-1887
1770-1893 | Pedigree of the Russell family, Newry, County Down, ... | |
| 8111 | Public Record Office of Northern Ireland | T/1827/ | 1770-1916 | T/1827/2 Copy of a letter from Annie Barker, Marketh... | |
| 8361 | Public Record Office of Northern Ireland | T/2519/ | 1770-1863 | Copies of various collections relating to J.F. Foste... | |
| 8690 | Public Record Office of Northern Ireland | T/808 | 1662-1666
1766
1770 | c9000 documents comprising of Tenison Groves' ge... | |
| 450 | Religious Society of Friends in Ireland Historical Library | Portfolio 1C | 1770-1965 | Certificates of Removal, 1770-1965, 18 items. | Handlists/Portfolio |
| 1063 | Religious Society of Friends in Ireland Historical Library | Mss Box 28 | c1770-c1814 | Correspondence of Deborah Shackleton Chandlee, c1770... | Handlists: Mss Boxes, Pamphlets Boxes, etc. |
| 1118 | Religious Society of Friends in Ireland Historical Library | Mss Box 33 | 1770 | Mary Leadbeater's character, memoir by Elizabeth Sha... | Handlists: Mss Boxes, Pamphlets Boxes, etc. |
| 1293 | Religious Society of Friends in Ireland Historical Library | | 1770 | Dress and accessories: Green apron worn by Mary Ridg... | Museum Collection |
| 4204 | Religious Society of Friends in Ireland Historical Library | Deed Box XI | 1770 | Jaffray, Abigail: Folder 6:9 Signatory to consent t... | Deeds |
| 3900 | Religious Society of Friends in Ireland Historical Library | Pamphlet Box 28 | 1770-1958 | 25 Account of work for Jewish Refugees in Dublin du... | Handlists: Mss Boxes, Pamphlets Boxes, etc. |
| 24298 | Tipperary County Archives | | 1750-1770 | Index to Corporation Minutes, c.1750 - c.1770 | Clonmel Corporation |
| 3636 | UCC Special Collections & Archives | U36 | 1770-1790 | Book of manuscript poetry in English. Many are not a... | |
| 18469 | UCC Special Collections & Archives | BL/LH/V | 1770-2006 | 2 boxes. Divided into 3 sections.Section A: Vickery ... | The Vickery Collection |
| 5927 | Waterford City Archives | LAI/I/A/ | 1770-1905 | Council Records, Minute Books:14: 29 September 1770-... | Waterford Corporation Archives |