| 13069 | Armagh County Museum | 1935/399 | 1815
1816 | 'Annual report of the association for the occasional... | |
| 16393 | Armagh Diocesan Archive (RC) | | 1815 | Letters of Most Reverend Dr Reilly, Archbishop of Ar... | Most Reverend Richard Reilly Archive |
| 16815 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1811-1815
1824-1834 | Lismore Estate?Banteer Rent Book, 1824-1834 with loo... | Bolton Library Archive |
| 16895 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1815-1952 | Baptismal Register, Ardmayle and Ballysheehan, 1815-... | Bolton Library Archive |
| 16896 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1815-1932 | Burial Register, Ardmayle and Ballysheehan, 1815-193... | Bolton Library Archive |
| 16926 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1815
1863 | Among material located in the filing cabinet:(11) Ad... | Bolton Library Archive |
| 4221 | Church of Ireland Centre | Ms100 | 1811-1815 | Committee Minutes and Resolutions, 2 December 1811-1... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4222 | Church of Ireland Centre | Ms101 | 1815-1819 | Committee Minutes and Resolutions, 25 November 1815-... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4235 | Church of Ireland Centre | Ms120 | 1814-1815 | Transcript of Letters Concerning the Sale of Cheap B... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4267 | Church of Ireland Centre | Serial No96 | 1815 | General Correspondence, I:Box 1 Letter from Lieutena... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19440 | Cloyne Diocesan Archive (RC) | Box B | 1815 | 1792.02/5/1815 Letter from Bishop Copinger, Cove, t... | Bishop Collins |
| 7565 | Down County Museum | DB2 | 1742-c.1815 | Photocopy of a rent book for Ballyhosset, County Dow... | |
| 5095 | Irish Architectural Archive | 97/84/Box 61 | 1815 | Rent Book relating to Castletown, 1815, 1 item. | Castletown Papers |
| 21043 | King's Hospital School | 116-130 | 1815-1817 | 125 Cash Book, 1815 - 1817. | King's Hospital Records |
| 3765 | King's Inns Library | G/2/3-1 | 1815 | Lease - Constitution Hill, Thomas Fulham and wife to... | Records of the Honorable Society of King's Inns |
| 111 | Limerick Archives | P8 | 1759-1815 | Account book of John Croker, Ballynagarde, 1807-1815... | Croker Papers |
| 22882 | Methodist Historical Society of Ireland | | 1815-1819 | 1 volume of an unidentified Methodist class book, 18... | |
| 4009 | National Archives of Ireland | 1050/3 | 1815-1856. | Minute Books of the Boardroom Meetings of the Truste... | Molyneux Home for the Blind |
| 11516 | National Archives of Ireland | | 1815-1848 | Miss Rossiter's Pass Book, Italy, includes lists of ... | Byrne Papers |
| 15338 | National Archives of Ireland | 99/56/9/1/14 | 1815 | Papers relating to Co. Donegal. Mortgage by Lt. Col.... | Family and estate records. 1611-1948 |
| 11437 | National Archives of Ireland | MFCI/14 | 1815-1857 | Clontarf parish, Diocese of Dublin Vestry and Cess B... | |
| 1403 | National Library of Ireland | Ms8023 | c.1810-1815 | Includes correspondence of Frances, wife of the 8th ... | Fingall Papers |
| 1510 | National Library of Ireland | Ms2131 | 1787-1815 | Correspondence, 55 letters, of Sir Philip Francis, m... | |
| 2021 | National Library of Ireland | Ms8263 | 1767-1815 | A biography of the actress Frances Abington with pri... | |
| 2424 | National Library of Ireland | Ms239 | 1815 | Commonplace Book with index, inscribed 'Medley, Knoc... | |
| 2474 | National Library of Ireland | Ms10181 | 1815-1842 | Letters of Elizabeth Ussher and other Quaker documen... | Ussher Papers |
| 2543 | National Library of Ireland | Ms9925 | 1815-1816 | Journal of a visit to Paris by Lady Caroline Clement... | Leitrim Papers |
| 2761 | National Library of Ireland | Ms21008 | c1815-1837 | Letters to Charity Whyte Baker of Ballytobin, County... | Baker Papers |
| 3033 | National Library of Ireland | Mss9765-9766 | 1759-1815 | Copies of letters by, and to, members of the Goff fa... | |
| 3527 | National Library of Ireland | Ms11881 | 1815-1850 | Account book of Slane Dispensary, 1815-1850. | Townley Hall Papers |
| 6898 | National Library of Ireland | Ms18890 | [1815] | Letter to John Macnamara, Moher, County Clare from S... | Stacpoole Kenny Papers |
| 6920 | National Library of Ireland | Ms19077 | 1810-1815 | Timber and Garden Account Book of the estate of Caro... | |
| 9007 | National Library of Ireland | Ms13651 | 1815-1830 | Letters to Daniel O'Connell from Mary O'Connell, Mar... | O'Connell Papers |
| 9105 | National Library of Ireland | Ms14495 | 1815 | Accounts, mostly tenants and workmen of the Dromolan... | Inchiquin Papers |
| 9132 | National Library of Ireland | Ms14770-14771 | 1815-1830 | Cash Book, mainly relating to transactions with tena... | Inchiquin Papers |
| 11050 | National Library of Ireland | Ms18778 | 1815-1846 | Xeroes of nine letters of Maria Edgeworth, various c... | |
| 6258 | Omagh Library | 285.2 | 1815 | Bound, printed 2nd annual report of the Auxiliary Mi... | Local Studies Collection |
| 16686 | Presentation Sisters Congregational Archives | | 1815
1833 | Foundation in Galway in 1815 from which was made a f... | Presentation Convent, Kilkenny |
| 7871 | Public Record Office of Northern Ireland | T/1102/1 | 1815 | Map of Ballinahinch, County Down, with a list of ten... | |
| 7227 | Public Record Office of Northern Ireland | D/3165 | 1790-1815 | This collection includes a bundle of letters from Jo... | Malcolm Papers |
| 7767 | Public Record Office of Northern Ireland | MIC/292 | 1815-1833 | Microfilmed copies of letters to Louisa Catherine Do... | |
| 7779 | Public Record Office of Northern Ireland | MIC/435 | 1763-c.1815 | Microfilmed copies of the papers of Conolly of Castl... | |
| 7896 | Public Record Office of Northern Ireland | T/1164/8-9 | 1815-1905 | Copy of a list of the children and descendants of Da... | |
| 8525 | Public Record Office of Northern Ireland | T/2964/2/1 | 1815-1816 | A copy of a list of passengers arriving in American ... | |
| 8467 | Public Record Office of Northern Ireland | T/2757 | 1805-1815 | Copies of correspondence between members of the Crai... | |
| 8482 | Public Record Office of Northern Ireland | T/2798/1/1-7 | 1809-1815 | This collection includes copies of 6 letters from Jo... | |
| 2145 | Representative Church Body Library | Ms47 | 1815
1950 | Account of the life of Ellen Hutchins, to 1815, bota... | |
| 6430 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs7958/3 | 1815 | Child's hand writing exercise of Constantia Grierson... | |
| 6883 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs7337/1-87 | 1815-1850 | Family correspondence of Louisa Clements, wife of He... | Clements Papers |
| 10358 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs3973 | c1815 | Disbursements by Lady Louisa Conolly and Mr Simmonds... | Conolly Papers |
| 10524 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs6403 | 1815-1839 | Miscellaneous family and political correspondence, 1... | |
| 11679 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5308-5310 | 1813-1815 | Incorporated Society for Promoting Protestant School... | Incorporated Society for Promoting Protestant Schools in Ireland |
| 11967 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs4022a | 1815 | Letters of Sir J O Vandeleur to Lady Ellen Vandeleur... | |
| 2072 | UCD Archives | SL14/1-7 | 1815-1907 | Wills and marriage settlements of the Scully family ... | Small Collections |
| 9932 | Waterford County Archives | | 1815-1924 | 50 volumes of Works/Scribbling Diaries relating to t... | Lismore Castle Papers |