| 6984 | Armagh County Museum | 1976/119 | 1840 | Notebook, Charlotte Campbell, 1840, 248 pages, conta... | |
| 6985 | Armagh County Museum | 1976/133 | 1840 | Circular, 'Death fo James Stuart Esq., L.L.D.... | |
| 16414 | Armagh Diocesan Archive (RC) | | 1840 | Material relating to the Diocese of Raphoe, includes... | Primate McGettigan Archive |
| 19120 | Armagh Robinson Library | Volume 7 | 1841 | A letter from Mrs Foster suggesting that her husband... | Primate J.G. Beresford Papers |
| 19121 | Armagh Robinson Library | Volume 7 | 1841 | A letter from Revd. W.H. Foster apologising for his ... | Primate J.G. Beresford Papers |
| 19127 | Armagh Robinson Library | Volume 8 | 1841 | A letter stating that Lady Elizabeth McClintock was ... | Primate J.G. Beresford Papers |
| 19137 | Armagh Robinson Library | Volume 10 | 1840 | A list of annual contributions in support of scriptu... | Primate J.G. Beresford Papers |
| 4287 | Church of Ireland Centre | Serial No158 | 1840 | General Correspondence, III:Lady F. Cole to Committe... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4288 | Church of Ireland Centre | Serial No160 | 1840 | General Correspondence, III:Mary Jackson and Son to ... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4289 | Church of Ireland Centre | Serial No164 | 1840 | General Correspondence, III: Lady Dunraven to J. Top... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19020 | Church of Ireland Centre | Box 36 | 1840 | Model School:Mod. 75 - Letter to Mrs Duncan from Ano... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19029 | Church of Ireland Centre | Box 36 | 1840 | Model School:Mod. 100 - 'School Assisted by the ... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 17000 | Cloyne Diocesan Archive (RC) | Box B | 1840 | 1796.20/2/1840 They are prepared for reception of M... | Bishop W. Keane Papers |
| 17001 | Cloyne Diocesan Archive (RC) | Box B | 1841 | 1796.20/3/1841 Instruction for reception of Miss Ho... | Bishop W. Keane Papers |
| 17017 | Cloyne Diocesan Archive (RC) | | 1840 | 1793.05 2/1840 letter Bishop B Crotty, Cove, to Rev... | Bartholomew Crotty Papers |
| 17161 | Cloyne Diocesan Archive (RC) | Box X | 1840 | 1792.08/1/1840 Letter from J. Mullane, Liverpool, to... | Revd. Denis Collins |
| 17162 | Cloyne Diocesan Archive (RC) | Box X | 1840 | 1792.08/2/1840 Statement of intent relating to educ... | Revd. Denis Collins |
| 22928 | Delany Archive | Box Bp/10 File FH/1841/ | 1841 | 27. 31 July 1841 SC Propaganda Fide Rome, to Bishop ... | Papers of Dr Francis Haly, Bishop of Kildare & Leighlin |
| 22929 | Delany Archive | Box Bp/10 File FH/1840/ | 1840 | 14: 16 June 1840 Mrs Mary Price, Westfield Farm, to ... | Papers of Dr Francis Haly, Bishop of Kildare & Leighlin |
| 21193 | King's Hospital School | 254-281 | 1840 | 261 Governors, List of, 1840. | King's Hospital Records |
| 6986 | Limerick Museum | AQNO (0000.1894) | 1840-1841 | Poster. Account of the Governors and Governesses of ... | |
| 13846 | Limerick Museum | AQNO (0000.4451) | c.1840 | Photograph. Glass slide. Object. Print, Wellesley Br... | |
| 14128 | Louth County Archives | | 1841 | Estate of the Right Honourable Sir A Foster. Particu... | |
| 20302 | Meath Local Studies and Family History Department | Box A/ | 1841 | 7 Letter, 1841. | Mountainstown Documents |
| 759 | National Archives of Ireland | 999/669 | 1841 | 6 June 1841, Census return for Florence McCarthy and... | |
| 8897 | National Archives of Ireland | M6933/10 | 1821
1822
1839
1840
1841 | Bundle of rentals of various portions of the Blake e... | Ballyglunin Papers |
| 8943 | National Archives of Ireland | M6178/79 | 1840 | Papers relating to the Corranerary Estate of William... | Greville Estate Papers |
| 11523 | National Archives of Ireland | | 1841 | Letter from J. Horan to Mrs Cecilia Rossiter Byrne, ... | Byrne Papers |
| 15397 | National Archives of Ireland | 99/56/10/31 | 1841 | Papers relating to King's County. Castellammare ... | Family and estate records. 1611-1948 |
| 15398 | National Archives of Ireland | 99/56/10/32/1 | 1841 | Papers relating to King's County. Release for lives ... | Family and estate records. 1611-1948 |
| 15452 | National Archives of Ireland | 999/22/2 | 1841 | Marriage Settlement between Patrick Kain, Multifarna... | Small Private Accessions |
| 15512 | National Archives of Ireland | 999/128/19 | 1840 | Lease for 21 years by the Right Honourable Lord John... | Small Private Accessions |
| 1948 | National Library of Ireland | Ms8462 | 1841 | A poem on the Blessed Virgin by Felicia Heman with a... | |
| 2497 | National Library of Ireland | P8423/Ms8221 | 1830
1840 | Petition, 1840, to the Secretary of State for the Co... | |
| 2540 | National Library of Ireland | P1098/N1016 | c1840 | Includes many letters to Elizabeth Cole, c1840. Micr... | Ballitore Papers |
| 2748 | National Library of Ireland | Ms20951 | 1841 | Letter to John D'Alton from his son William, enclosi... | D'Alton Papers |
| 2756 | National Library of Ireland | Ms20,966 | 1841 | Two letters to Kate D'Alton of Dublin from her daugh... | D'Alton Papers |
| 2983 | National Library of Ireland | Ms9143 | 1841 | Includes a photocopy of a grant to Mary Thorp, widow... | |
| 2984 | National Library of Ireland | Ms9145 | 1841 | Photocopy of a lease by Samuel Thorp to Mary Thorp, ... | |
| 6906 | National Library of Ireland | Ms18905 | 1840 | Letter of Michael Stacpoole, Milford [County Limeri... | Stacpoole Kenny Papers |
| 9027 | National Library of Ireland | Ms13751(9) | 1840 | Nineteen letters to Richard Wilson Fitzpatrick from ... | Fitzpatrick Papers |
| 9345 | National Library of Ireland | Ms23810 | 1841 | Rate Book of the electoral division of Kilcash, Carr... | Ormonde Papers |
| 9635 | National Library of Ireland | Ms29767(16) | 1841 | Lease by John H Ryan to Anne Doyle, widow, and James... | Hibernian Mining Company Papers |
| 10888 | National Library of Ireland | Ms21604 | 1840 | Draft of a petition of Henrietta Arnauld, Lismore, t... | Hodson Papers |
| 10892 | National Library of Ireland | Ms21703 | 1841 | Three letters of the O'Connell family, includes a no... | |
| 6339 | Public Record Office of Northern Ireland | D/11/1 | 1841 | Deed of trust by Anne Hall, Dublin: subscription of ... | |
| 8099 | Public Record Office of Northern Ireland | T/1739 | 1840 | Copy of a subscription list for the erection of a sc... | |
| 6385 | Public Record Office of Northern Ireland | T/1801/6 | 1840 | Copy of a letter from Eliza Browne, Belfast to Maria... | |
| 8181 | Public Record Office of Northern Ireland | T/2006/1 | 1841 | Certified copy of extracts from the 1841 census rela... | |
| 8235 | Public Record Office of Northern Ireland | T/2146/1 | 1841 | Copy of a newspaper cutting from the Belfast News-Le... | |
| 8461 | Public Record Office of Northern Ireland | T/2746/1A-B | 1840 | 2 copies of a list of passengers on board the ship '... | |
| 8538 | Public Record Office of Northern Ireland | T/3034/1-2 | 1840-1841 | Copies of two letters from Elizabeth McCleland, Dunr... | |
| 8539 | Public Record Office of Northern Ireland | T/3036/6 | 1841 | Copy of a passenger list of emigrants on board the s... | |
| 8707 | Public Record Office of Northern Ireland | T/881/1 | 1841 | Copy of a portion of census return, including Mary M... | |
| 548 | Religious Society of Friends in Ireland Historical Library | Portfolio 33 | 1840-1841 | 1 Certificate of Removal, Anne Grubb from Edenderry... | Handlists/Portfolio |
| 1292 | Religious Society of Friends in Ireland Historical Library | | 1841 | Dress and accessories: Wedding dress of Elizabeth Ha... | Museum Collection |
| 1338 | Religious Society of Friends in Ireland Historical Library | | 1840 | Temperance: Pledge, Father Matthew, signed by Cather... | Museum Collection |
| 13105 | Tipperary Museum of Hidden History | AQNO1995.410 | 1841 | Lease, Viscount Lismore to Mary Coughlan, Gurteenbeh... | |
| 10271 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5089a | 1836, 1838, 1840, no date | Correspondence of the Honourable Grace O'Brien, 1836... | |
| 10508 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs3989 | 1841 | Anthology of poems concerning Conty Kilkenny familes... | |
| 995 | UCC Special Collections & Archives | BL/EP/G/184-204/A/5 | 1841 | Legal case papers including a number relating to wom... | Grehan Estate Collection |
| 13847 | University of Galway Archives | P14 | c1841 | A scrapbook, kept by a lady in c1841, containing pri... | |
| 19325 | Westmeath County Archives Department | | 1841 | 184 Richard Swift Esq. to Catherine Louisa Marlay, ... | Howard Bury Papers |