| 8762 | Ballymoney Library | U/A-BMO-373 | 1823-1824 | Typed volume entitled, 'Account of Schools in pa... | |
| 16167 | Birr Castle Archives | A-W | 1823-1830 | D/21/1-16: Letters to the 2nd Earl of Rosse from Mar... | The Rosse Papers |
| 16163 | Birr Castle Archives | A-W | 1823-1824
1817 | D/6/1-14: Letters to the 2nd Earl of Rosse from Mr a... | The Rosse Papers |
| 16814 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1818-1823 | Lismore Estate?County Cork Estate Rent Book, 1818-18... | Bolton Library Archive |
| 16921 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1735
1823
1842 | Among material located in the filing cabinet:(5) (a)... | Bolton Library Archive |
| 22980 | Cork City and County Archives | U6/ | 1823 | (x) 1 letter from John Ryan, Steeven's Hospital ... | |
| 16493 | Delany Archive | Box Bp/02 File JKL.1823/ | 1823 | 69: Sunday Hannah Gurly Carlow Convent, to Doyle, Du... | Papers of Dr James Doyle, Bishop of Kildare & Leighlin |
| 16499 | Delany Archive | Box 04 File JKL.ODC | 1823-1834 | Typed copies of 97 letters of Bishop Doyle to nuns o... | Papers of Dr James Doyle, Bishop of Kildare & Leighlin |
| 23777 | Delany Archive | Box Bp/02 File JKL.1823/ | 1823 | 51: 13 September 1823 Rev. J. O'Connor, Clongowes, t... | Papers of Dr Patrick Foley, Bishop of Kildare & Leighlin |
| 23778 | Delany Archive | Box Bp/02 File JKL.1823/ | 1823 | 47: 1 August 1823 Daniel O'Connell Limerick to Doyle... | Papers of Dr Patrick Foley, Bishop of Kildare & Leighlin |
| 23779 | Delany Archive | Box Bp/02 File JKL.1823/ | 1823 | 43: 16 June 1823 Mary Anne Lalor, Tullow to Doyle, O... | Papers of Dr Patrick Foley, Bishop of Kildare & Leighlin |
| 23847 | Delany Archive | Box Bp/02 File JKL.1823/ | 1823 | 74: 24 December 1823 Doyle, Old Derrig to Mrs G. Bur... | Papers of Dr James Doyle, Bishop of Kildare & Leighlin |
| 13085 | Dublin Diocesan Archives (RC) | AB3 | 1823-1852 | Dr Daniel Murray (1768-1852) was archbishop of Dubli... | Murray Papers |
| 21730 | Kerry Diocesan Archives (RC) | E92 | 1837-1839
1823 | County of Kerry Saving Book, Tralee, 1823, regarding... | Bishop Cornelius Egan, 1825 - 1856 |
| 13034 | Kildare Local Studies, Genealogy and Archives Department | PP1/12 | 1787-1823 | Letters to Amy and Elizabeth Grubb from Mary Shackle... | Shackleton Papers |
| 20922 | King's Hospital School | 1-16a | 1798-1823 | 8 Committee Book, 1798 - 1823. | King's Hospital Records |
| 20990 | King's Hospital School | 65-82 | 1823-1829 | 74 Rent Ledger, 1823-1829. | King's Hospital Records |
| 21038 | King's Hospital School | 116-130 | 1823-1827 | 120A Bread Accounts, 1823-1827. | King's Hospital Records |
| 21044 | King's Hospital School | 116-130 | 1817-1823 | 126 Account of receipts payment, 1817 - 1823. | King's Hospital Records |
| 21045 | King's Hospital School | 116-130 | 1823-1829 | 127 Account of receipts payment, 1823 - 1829. | King's Hospital Records |
| 5748 | Louth County Archives | | 1823-1899 | Query Books: 1823-1824-1825 1826-1827-1828 1829-1830... | Louth Grand Jury Records |
| 22845 | Methodist Historical Society of Ireland | | 1823-1873 | Clones Methodist District: Minute book, 1823-1873 | |
| 22864 | Methodist Historical Society of Ireland | | 1823 | Antrim Methodist Church: Account book, 1823 | |
| 22896 | Methodist Historical Society of Ireland | | 1784
1804
1823 | Archival box 9, contains sermons and obituaries. For... | |
| 13082 | Monaghan County Library Genealogy and Local History Department | | 1823 | Photocopy of manuscript, Members of the Established ... | |
| 4746 | National Archives of Ireland | 1028/1 | 1823-1908 | Printed Annual Reports: 1823-1830 1835-1839 1840-184... | Sick and Indigent Roomkeepers Society |
| 11513 | National Archives of Ireland | | 1823-1850 | Miscellaneous Receipts for Mrs Byrne, 1823-1850. | Byrne Papers |
| 11525 | National Archives of Ireland | | 1788-1823 | Correspondence to Edmond Byrne, James E. Byrne, Mrs ... | Byrne Papers |
| 15364 | National Archives of Ireland | 99/56/10/6/13 | 1823 | Papers relating to King's County. Deed of annuity fo... | Family and estate records. 1611-1948 |
| 15556 | National Archives of Ireland | 999/169/1 | 1823 | Photocopy of letters of administration with will ann... | Small Private Accessions |
| 15560 | National Archives of Ireland | 999/175/1-2 | 1823 | Reports to the Rural Dean on the state of parishes i... | Small Private Accessions |
| 1016 | National Library of Ireland | Ms12911 | 1823-1899 | Reports, in one volume, of County Donegal Assizes, 1... | |
| 1953 | National Library of Ireland | Ms4790 | 1823-1824 | Journal of a Miss Beresford who apparently lived in ... | |
| 1993 | National Library of Ireland | Ms7543 | 1823-1878 | Includes extracts of letters from Larcom to his moth... | Larcom Papers |
| 2725 | National Library of Ireland | Ms20808 | 1823 | Letter from Colonel Francis Dunne in Dundalk to Mrs ... | |
| 2932 | National Library of Ireland | Ms8672 | 1791-1823 | Legal documents, 1791-1823, relating to the Briscoe ... | Briscoe Papers |
| 2948 | National Library of Ireland | Ms8789 | 1823-1836 | Miscellaneous letters, 1823-1836, which include an a... | |
| 2990 | National Library of Ireland | Ms9216 | 1803-1823 | An incomplete Account Book of the Sick Poor Institut... | |
| 3528 | National Library of Ireland | Ms11883 | 1823-1871 | List of recipients of blankets and coal distributed ... | Townley Hall |
| 9005 | National Library of Ireland | Ms13645(28) | 1823 | Letter from General O'Connell to Ellen O'Connell, Ap... | O'Connell Papers |
| 9184 | National Library of Ireland | Ms14902 | 1823-1824 | Minutes of the Westport Petty sessions, 1823-1824, r... | |
| 9256 | National Library of Ireland | Ms15719 | 1823
1826
1833 | Four autographed letters of Mrs Felicia Hemans to: R... | |
| 9370 | National Library of Ireland | Mss23525-23526 | c.1823-1830 | Two Letter Books of John FitzMaurice, Rahindoran, Co... | FitzMaurice Papers |
| 9447 | National Library of Ireland | Ms24659 | c1823-1849 | Tithe Applotment Books for the parishes of Ardmore a... | Villiers-Stuart Papers |
| 9631 | National Library of Ireland | Ms27382 | 1820-1823 | Letters from Mrs Rose Delahoyde requesting prompt pa... | O'Bryne Papers |
| 9632 | National Library of Ireland | Ms27338 | 1820-1823 | Letters of Michael Carroll, Urlingford, relaitng to ... | O'Bryne Papers |
| 9687 | National Library of Ireland | Ms27233 | 1823-1826 | Nine letters from Helena Bellew to her husband Micha... | Bellew Papers |
| 9702 | National Library of Ireland | Ms17882 | 1816-1823 | Three miscellaneous letters of the O'Connell family ... | |
| 8468 | Public Record Office of Northern Ireland | T/2757/2/2 | c.1810-1823 | Copy of the journal of Rachel Craig, Lisburn, County... | |
| 6475 | Public Record Office of Northern Ireland | D/1132/ | 1823-1930 | D/1132/4/2 Letters from Anna Lowry, Boulogne and Lon... | Alexander Papers |
| 7331 | Public Record Office of Northern Ireland | D/3727 | 1823-1960 | c.5000 documents relating to the Armstrong family, 1... | Armstrong Papers |
| 8439 | Public Record Office of Northern Ireland | T/2688/1 | 1789-1823 | Copy of the vestry book of Greyabbey Parish Church, ... | |
| 8487 | Public Record Office of Northern Ireland | T/2823 | 1822-1823 | Copies of 2 medical case books belonging to Doctor B... | |
| 8555 | Public Record Office of Northern Ireland | T/3252 | 1823-1850 | Copy of a letter from Ann Crawford, Bombay, India, t... | |
| 895 | Religious Society of Friends in Ireland Historical Library | | 1823 | Scrap Books: Recipe Book with remedies and inventory... | Museum Collection |
| 10005 | Religious Society of Friends in Ireland Historical Library | PM/MouI/A1 | 1823-1884 | Mountmellick Joint Preparative Meeting Minutes, 1823... | |
| 21484 | Religious Society of Friends, Ulster Quarterly Meeting Archive | | 1807-1823 | Proceedings of Yearly Meetings, 1807-1823. | |
| 21487 | Religious Society of Friends, Ulster Quarterly Meeting Archive | | 1823-1835 | London epistles, 1823-1835. | |
| 2210 | Representative Church Body Library | Ms481 | 1823-1927 | Minutes and accounts of the Ralph Macklin Sunday and... | Ralph Macklin Schools |
| 5391 | Representative Church Body Library | D6/146-D6/147 | 1700-1823 | D6/146 Balfour Trust. Grant of annunity of £10... | Diocese of Dublin |
| 22409 | Royal College of Physicians of Ireland | | 1823-1845 | Registrar's Report Book, 1823-1845. | Sir Patrick Dun's Hospital |
| 25019 | Royal Irish Academy | 12/T/20/ | 1823 | 2: Miniature of Lady Morgan by Samuel Lover, 1823. | |
| 25020 | Royal Irish Academy | 12/T/20/ | 1823 | 3: Lady Morgan by Samuel Lover, 1823. | |
| 13083 | Sligo Archives Service | F.C./D.3/2 | 1823 | Brief on behalf of plaintiffs, Sarah, Alicia, Cather... | |
| 13084 | Tipperary Museum of Hidden History | AQNO1995.432 | 1823 | Lease, Viscount Lismore to Edmond, Bridget and Thoma... | |
| 1689 | Tipperary Studies | | 1760-1800
1823-1828
1844-1847
1853-1976
1977-1982 | Minutes of Library Committee Meetings: 1927-1932 193... | |
| 10355 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs3957 | 1791-1823 | Servants' Board Wages, 1791-1803 Miscellaneous Hous... | Conolly Papers |
| 10378 | Trinity College Dublin, Manuscripts and Archives Department | CourtownV234 | 1823-1825 | Courtown Ladies Association Minute Book, 1823-1825. | Courtown Papers |
| 19297 | Westmeath County Archives Department | | 1823 | 19 The Right Honourable Jane Countess of Lanesborou... | Howard Bury Papers |
| 19309 | Westmeath County Archives Department | | 1823 | 113 The Right Honourable Countess of Lanesboro to E... | Howard Bury Papers |