| 13837 | Armagh County Museum | 1960/164 | c.1770-1845 | Schedule of leases, Charlemont estate, from c.1770-1... | |
| 13848 | Armagh County Museum | 1956/58 | c1844-1845 | Album of drawings entitled 'Ireland. Sketches fr... | |
| 13849 | Armagh County Museum | 1961/10 | c1845-1848 | Needlework book, title page embroidered 'The fol... | |
| 19141 | Armagh Robinson Library | Volume 1800-1849 | 1845 | An extract from the Armagh Guardian which state... | Dean Rennison Papers |
| 8766 | Ballymena Central Library | U/Lo/(COL)362.5 | 1845-1850 | Coleraine Board of Guardian Minutes, copied from the... | Coleraine Board of Guardian Records |
| 8768 | Ballymena Central Library | U/Lo/(MAG)362.5 | 1845-1952 | Magherafelt Board of Guardian Minutes, copied from t... | Magherafelt Board of Guardian Records |
| 16234 | Birr Castle Archives | A-W | 1840-1845 | O/30: 9 designs by Mary, Countess of Rosse, (? and o... | The Rosse Papers |
| 23862 | Brother Allen Archive | Box 176 | 1845-1938 | Folder containing:Three letters regarding the attemp... | Brother Allen Archival Collection |
| 6176 | Carlow County Archive | 1-19 | 1845-1854 | Minute Books:1. 22 March 1845 - 10 January 18462. 10... | Carlow Poor Law Union |
| 16775 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1845-1879 | Register of Marriages, Tipperary Parish, 1845-1879, ... | Bolton Library Archive |
| 16793 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1845-1875 | Register of Marriages, Cashel parish, 1845-1875, 1 v... | Bolton Library Archive |
| 16831 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1845-1951
1957-1993 | Register of Marriages, Magorban:1845-19511957-1993, ... | Bolton Library Archive |
| 16843 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1845-1850 | Marriage Register, Ballintemple, 1845-1850, 1 volume... | Bolton Library Archive |
| 16887 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1845-1927
1948-1927
1948 | Marriage Registers, Cullen: 1845-1927, with inserts ... | Bolton Library Archive |
| 16900 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1845-1870 | Marriage Register, Shronell, 1845-1870, 1 volume. | Bolton Library Archive |
| 4291 | Church of Ireland Centre | Serial No173 | 1845 | General Correspondence, III:Mrs M. Mills to T. Stewa... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 17005 | Cloyne Diocesan Archive (RC) | Box C | 1845 | 1796.07/6/1845 Note from J Walsh for 'some cash on ... | Bishop W. Keane Papers |
| 17006 | Cloyne Diocesan Archive (RC) | Box C | 1845 | 1796.00/3/1845 Photocopy. Newspaper cutting from 'C... | Bishop W. Keane Papers |
| 17164 | Cloyne Diocesan Archive (RC) | Box X | 1845 | 1792.08/3/1845 Letter from Mother E. Moore, Limerick... | Revd. Denis Collins |
| 17165 | Cloyne Diocesan Archive (RC) | Box X | 1845 | 1792.08/4/1845 Letter from Mother E Moore, Limerick... | Revd. Denis Collins |
| 22991 | Cork City and County Archives | U140/Class E/ | 1845-1851 | Day80/39 Cork Ladies Anti-Slavery Society, Boston Ba... | Dowden Papers |
| 22993 | Cork City and County Archives | U140/Class E/ | 1845 | Day80/135 Tenders for a new asylum presented at a me... | Dowden Papers |
| 22994 | Cork City and County Archives | U140/Class E/ | 1845 | Day80/97 Cork Lying-in Hospital, medical report, 184... | Dowden Papers |
| 22995 | Cork City and County Archives | U140/Class E/ | 1845 | DAy80/70 Notice of a public ball, 1 November 1845. | Dowden Papers |
| 22998 | Cork City and County Archives | U140/Class E/ | 1845 | Day 80/94 Matters relating to the Grand Jury, includ... | Dowden Papers |
| 24035 | Cork City and County Archives | U196 | 1845
1855 | Box 8 Contains legal documents, many of which relate... | Colthurst Papers |
| 3148 | Dún Laoghaire-Rathdown County Council | LA1/259 | 1845 | Legal Records: Copy assignment of 13 acre house and ... | Blackrock |
| 12 | Irish Dominican Congregation Archives | A23 | 1845-1960 | Photo of Kirwin's Lane, Galway, no date. | Dominican Archives, Cabra |
| 5134 | Irish Jesuit Archives | J27/ | 1845-1850 | Various:159 10 May 1845 -[ ] 1850. A file relating t... | Papers of Fr Matthew Russell, SJ (1834 - 1912) |
| 2045 | Kerry Local Studies and Archives Department | BG/104/A.A/ | 1845-1871 | Rough Minute Books:1. December 1840 - November 18452... | Killarney Poor Law Union |
| 21824 | Kerry Local Studies and Archives Department | BG/154/AA/ | 1845-1876 | Minute Books1. April 1845 - October 1847 (First Meet... | Tralee Poor Law Union |
| 12694 | Kildare Local Studies, Genealogy and Archives Department | | 1839-1845 | Two bound volumes entitled 'The Famine in County... | |
| 20983 | King's Hospital School | 65-82 | 1645-1845 | 67 Abstract of Deeds and Leases by Goddard Identific... | King's Hospital Records |
| 21114 | King's Hospital School | 180-195 | 1838-1845 | 189 Report Book weekly, 1838 - 1845. | King's Hospital Records |
| 5726 | Laois Local Studies | | 1845-1913 | Minute Books:22 February 1845 - 6 December 184512 De... | Mountmellick Poor Law Union |
| 11975 | Limerick Diocesan Archives (RC) | | 1845-1973 | Filing cabinet 1:Drawer 2 Correspondence of Father A... | |
| 444 | Longford Archives and Local Studies | | 1845-1911 | Newcastle County Longford:Rent Ledger:Right Honourab... | King-Harman Estate |
| 5749 | Louth County Archives | | 1845-1979 | Minutes of Sub-committee to Superintendent Affairs o... | Louth County Library |
| 20615 | Meath Local Studies and Family History Department | Box E/ | 1845 | 3 Rent receipt to A. Pollock 1845. | Mountainstown Documents |
| 22852 | Methodist Historical Society of Ireland | | 1840-1845 | Dublin Circuit Plan: 1840-1845 | |
| 22870 | Methodist Historical Society of Ireland | | 1845 | Rossnowlagh Methodist Chapel: Class list, no date Ru... | |
| 8853 | National Archives of Ireland | D23480 | 1845 | Assignment of Annuities, Clarinda Lenigan to John Ev... | Lenigan-Evans Papers |
| 8860 | National Archives of Ireland | WW47 | 1769-1845 | The Marriage Licence Bonds Indexes are according to ... | |
| 8861 | National Archives of Ireland | WW 35 | 1751-1845 | The Marriage Licence Bonds Indexes are according to ... | |
| 8916 | National Archives of Ireland | M3247 | 1845 | Valuation of furniture, etc., in Gowran Castle, sold... | Clifden Papers |
| 13116 | National Archives of Ireland | Dublin 1845 9/2361 | 1845 | Account of the burning of Flora Villa, Donnybrook, b... | Outrage Papers, 1832-1852 |
| 13117 | National Archives of Ireland | Fermanagh 1845 10/6609 | 1845 | Arrest of Alexander Smith, charged with the murder o... | Outrage Papers, 1832-1852 |
| 13118 | National Archives of Ireland | Fermanagh 1845 10/12815 | 1845 | Memorial of John Lane, complaining of being falsely ... | Outrage Papers, 1832-1852 |
| 15550 | National Archives of Ireland | 999/168/1 | 1845-1976 | Notes concerning the descendants of James Mee and Ma... | Small Private Accessions |
| 23989 | National Archives of Ireland | CRF 1845/B28 | 1845 | The case of Margaret Buckley who was charged as a va... | Convict Reference Files, 1836-1922 |
| 170 | National Library of Ireland | Ms18626 | 1845 | Miscellaneous estate and household accounts [Farnham... | Farnham papers |
| 1930 | National Library of Ireland | Ms4483 | 1845-1866 | A folder containing some papers of Miss Anne Johnsto... | |
| 1994 | National Library of Ireland | Ms5948 | 1845-1862 | Includes letters to Peter Fitzgerald and his wife fr... | Larcom Papers |
| 2003 | National Library of Ireland | Ms7911 | 1845-1847 | Copies of letters of Lady Georgiana Charlotte Fuller... | |
| 2313 | National Library of Ireland | Mss5465- 5466 | 1842, 1845 | Two rentals of the Irish estates of A Murray, Esq., ... | Irish Estates of A Murray |
| 2450 | National Library of Ireland | Mss7800-7811 | 1845-1889 | Diaries of Mary Burtchaell of Brandondale, County Ki... | |
| 2879 | National Library of Ireland | Ms499 | 1845 | Manuscript copy of 'Gerald Fitzgerald, a tale of the... | |
| 2936 | National Library of Ireland | Ms8683 | 1793-1845 | Documents relating to the Burton family, 1793-1845. ... | Burton Papers |
| 2945 | National Library of Ireland | Ms8782 | 1835-1845 | Correspondence of Harriet Beaufort, dealing with, am... | Beaufort Papers |
| 2968 | National Library of Ireland | Ms8907 | 1845-1868 | Miscellaneous correspondence of the Humphreys family... | |
| 2972 | National Library of Ireland | Ms8920 | c1832-1845 | Diary of Mrs John Hutchinson (nee Eliza H Waller) re... | Hutchinson Papers |
| 3608 | National Library of Ireland | Ms13112 | 1840-1845 | Thirty letters from Aubrey de Vere to Harriet Thomp... | De Vere Papers |
| 3609 | National Library of Ireland | Ms13113 | 1845-1886 | Fifty six letters by Aubrey de Vere to Mrs Edward Vi... | De Vere Papers |
| 3613 | National Library of Ireland | Ms13118 | 1845-1856 | Forty letters by Aubrey de Vere to Miss I Fenwick, 1... | De Vere Papers |
| 8992 | National Library of Ireland | Ms13630(10) | 1800-c1845 | Report of the workers in the tailoring trade in Dubl... | O'Connell Papers |
| 9008 | National Library of Ireland | Ms13660 | 1844-1845 | Seven letters of Daniel O'Connell to Margaret O'Mara... | O'Connell Papers |
| 9051 | National Library of Ireland | Ms13880 | 1822-1845 | Letter from William Hogan, Dublin, to his father, re... | |
| 9146 | National Library of Ireland | Ms14859 | 1830-1845 | Memorandum of Charlotte O'Brien for travelling and d... | Inchiquin Papers |
| 9473 | National Library of Ireland | Ms25026 | c.1845-1862 | Register of petitions to the land agent by tenants o... | Ormonde Papers |
| 10662 | National Library of Ireland | Ms16732 | 1845 | Rate book for Ballisodare electoral division, Union ... | O'Hara Papers |
| 10938 | National Library of Ireland | Ms22298 | 1845-1848 | Register [of St Peter's Female School?] Dublin, a sc... | |
| 11576 | National Library of Ireland | Ms12200 | 1845
1846 | Ballina Poor Law Union Minute Book, 29 March 1845-14... | |
| 11589 | National Library of Ireland | Ms12372 | 1843-1845 | Castlebar Poor Law Union Minute book, 1 July 1843- 7... | |
| 19092 | Newry City Library | Q41.65.8 | 1845-1861 | 14 volumes of bound, typescript and handwritten pape... | The Crossle Papers |
| 5445 | Newtown School, Waterford | BA/3 | 1845 | Penmanship, poem by Bardon, 1845. | |
| 6631 | Public Record Office of Northern Ireland | D/1771 | 1845 | Emigrant letter from Miss Nancy Wightman, a teacher ... | |
| 6666 | Public Record Office of Northern Ireland | D/1860/1 | 1845-1861 | A minute book for the Society for the Amelioration o... | |
| 8025 | Public Record Office of Northern Ireland | T/1543/3 | 1845 | Copy of an emigrant letter from James and Mary Toal,... | |
| 6383 | Public Record Office of Northern Ireland | T/1798/1-2 | 1844-1845 | Genealogical notes on the Hume family, Berwickshire,... | |
| 6539 | Public Record Office of Northern Ireland | D/1500/17 | c.1845 | Description of a holiday spent by a lady in Carrickf... | McKinney Papers |
| 6647 | Public Record Office of Northern Ireland | D/1815/2 | 1842-1845 | D/1815/2/3 Notes on money collected for the benefit... | Atkinson Papers |
| 6695 | Public Record Office of Northern Ireland | D/1926 | 1845-1946 | Presbytery of Magherafelt, County Londonderry: 2 mar... | |
| 7003 | Public Record Office of Northern Ireland | D/2501 | 1845-1954 | 7 documents relating to James Murdock and Sons Limit... | |
| 7223 | Public Record Office of Northern Ireland | D/3152/6A-B | 1845 | 2 letters from W.P. Oulton, Lurgan, County Armagh to... | |
| 7513 | Public Record Office of Northern Ireland | D/636 | 1845-1872 | Letters to Henry Dix Hutton from his mother in Italy... | Hutton Papers |
| 7662 | Public Record Office of Northern Ireland | LA/17 | 1845-1957 | Local Authority records are closed for 30 years from... | Balymoney Urban District Council Records |
| 7681 | Public Record Office of Northern Ireland | LA/35/ | 1845-1961 | The records of Enniskillen Borough Council include, ... | Enniskillen Borough Council Records |
| 7905 | Public Record Office of Northern Ireland | T/1184/1-2 | 1845-1860 | First Presbyterian Congregation, Saintfield, County ... | |
| 7941 | Public Record Office of Northern Ireland | T/1280/1/2 | 1845 | Copy of letter from Mrs Foote, Table Cap, New South ... | |
| 7982 | Public Record Office of Northern Ireland | T/1405/4 | c.1845 | Copy of a letter from Lady Emily Packenham, Longford... | |
| 7986 | Public Record Office of Northern Ireland | T/1424/1-2 | 1845 | Copy of a letter from Captain F.R.H. Crozier to his ... | |
| 8073 | Public Record Office of Northern Ireland | T/1664/ | 1845-1858 | An index to this collection of c70 documents is avai... | |
| 8257 | Public Record Office of Northern Ireland | T/2204/2 | 1845 | Copy of the survey of the Grocers Proportion, London... | |
| 8503 | Public Record Office of Northern Ireland | T/2890 | 1845-1847 | Copies of the correspondence of the Relief Commissio... | |
| 8515 | Public Record Office of Northern Ireland | T/2929/ | 1816-1845 | The Rossmore papers include, for example: T/2929/21/... | Rossmore Papers |
| 17280 | Queen's University Belfast Special Collections and Archives | MS54 | 1845-1877 | The documents include account statements, inventorie... | Smith Collection |
| 452 | Religious Society of Friends in Ireland Historical Library | Portfolio 1E | 1844-1845 | Certificates of Removals, 1844-48. Letters of Appro... | Handlists/Portfolio |
| 453 | Religious Society of Friends in Ireland Historical Library | Portfolio 1F | 1845-1858 | Dublin Monthly meetings, miscellaneous records 1845,... | Handlists/Portfolio |
| 1251 | Religious Society of Friends in Ireland Historical Library | MMIII/Z6-7
MMIII/Z6-7 | 1809-1845 | Miscellaneous: MMIII/Z6 Copies of Women's Yearly Me... | Edenderry Monthly Meeting |
| 3571 | Religious Society of Friends in Ireland Historical Library | LGM5/6B/Reel 29 B | 1845-1912 | Marriage Register, Lurgan Monthly Meeting, 1845-1912... | |
| 6184 | Religious Society of Friends, Waterford | Box 1 | 1758-1845 | No 1 Lease of a slate house and walled garden near t... | Waterford Monthly Meeting Documents |
| 22071 | Representative Church Body Library | B5 | 1845-1942 | St Paul's Parish, Registers of Marriages:March 1... | St Fin Barre's Cathedral Cork Archive |
| 22074 | Representative Church Body Library | B5 | 1845-1948 | St Peter's Parish, Registers of Marriages:April ... | St Fin Barre's Cathedral Cork Archive |
| 23720 | Representative Church Body Library | | 1845-1854
1872-1981 | Kilculliheen Parish, County Waterford: Register of B... | Waterford Cathedral |
| 23721 | Representative Church Body Library | | 1845-1855
1946-1964 | Parish Records of Ballinakill, County Waterford: Reg... | Waterford Cathedral |
| 22409 | Royal College of Physicians of Ireland | | 1823-1845 | Registrar's Report Book, 1823-1845. | Sir Patrick Dun's Hospital |
| 3783 | Royal Irish Academy | 12/L/3 | 1590-1845 | Extracts and synopses of the legal documents belongi... | Roche, Fitzgerald and Sarsfield Papers |
| 21989 | St Canice's Hospital, Kilkenny | | 1845-1857
1940-1950 | Case-Book:August 1845-May 1857c.1940-c.1950. | St Canice's District Lunatic Asylum |
| 13119 | Tipperary Museum of Hidden History | AQNO1995.273 | 1845 | Lease, Viscount Lismore to Mrs Margaret Doherty, Bal... | |
| 22755 | Tower Museum, Derry-Londonderry | | 1845-1849
1886 | Reproductions of numerous etchings, several depictin... | |
| 10352 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs3564 | 1845 | Collection of hymns written out by Jemima Petrie (?s... | |
| 10354 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs3566 | c1842-1845 | Collection of songs belonging to Florinda and Julie ... | |
| 10441 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs6462a | 1845 | Commonplace Book of Pauline Hart, sister of Adelaide... | Dillon Papers |
| 11152 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5055a | c1845-1885 | Extracts from letters to Aubrey de Vere copied by Mr... | O'Brien Family |
| 11229 | Trinity College Dublin, Manuscripts and Archives Department | P 33/13-1-168 | 1845-1849 | Letters to J G H Stopford, later 5th Earl, mainly fr... | Courtown Papers |
| 13097 | UCC Special Collections & Archives | U59 | 1829-1845 | Manuscript book of recipes, cures and household hint... | |
| 24097 | Union Theological College | | 1845 | B Parsons, 'Education, the birthright of every human... | Union Theological College Pamphlet Collection |
| 13108 | University of Galway Archives | P3 | 1842
1845 | Spiritual writings, including retreat notes and repo... | |
| 22118 | Waterford County Museum | | 1845-1848
1853 | Dungarvan Poor Law Union Minute Books:December 1848-... | Dungarvan Poor Law Union |
| 1469 | Wexford County Archive | | 1845-1872 | 1. Wexford Infirmary Minute Book 5 May 1845 - 9 Dece... | Wexford Local Authority |