| 13078 | Armagh County Museum | | 1820, 1837 | 1988/225 Print, elevation of the Lunatic Asylum for... | |
| 4247 | Church of Ireland Centre | Ms318 | 1820 | Abstract of gratuities paid to teachers, December 18... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4270 | Church of Ireland Centre | Serial No37 | 1821 | General Correspondence, II:R. Forster to S. Bewley r... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4271 | Church of Ireland Centre | Serial No46 | 1821 | General Correspondence, II:Miss Hawkshaw to D. Litto... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4268 | Church of Ireland Centre | Serial No11 | 1820 | General Correspondence, II:Lady Louisa Connolly to J... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 4269 | Church of Ireland Centre | Serial No17 | 1820 | General Correspondence, II:Box 2 W. Parnell to Socie... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 18999 | Church of Ireland Centre | Box 36 | 1820 | Model School:Mod. 14 - List of Ladies and Mistresses... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19002 | Church of Ireland Centre | Box 36 | 1820 | Model School:Mod. 17 - Letter from Ely Le Foru to Mo... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19004 | Church of Ireland Centre | Box 36 | 1821 | Model School:Mod. 20 - Miss Steele, to Model School ... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19005 | Church of Ireland Centre | Box 36 | 1820 | Model School:Mod. 21 - Miss C. Mayne no longer in co... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19006 | Church of Ireland Centre | Box 36 | 1820 | Model School:Mod. 32 - Extract from Minutes regardin... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19007 | Church of Ireland Centre | Box 36 | 1820 | Model School:Mod. 33 - Summary of visiting Ladies by... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19008 | Church of Ireland Centre | Box 36 | 1821 | Model School:Mod. 34 - Extract of Minutes regarding ... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19009 | Church of Ireland Centre | Box 36 | 1821 | Model School:Mod. 35 - Extract from Proceedings of M... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19010 | Church of Ireland Centre | Box 36 | 1821 | Model School:Mod. 36 - Letter from M.A. McLoughlin r... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19011 | Church of Ireland Centre | Box 36 | 1821 | Model School:Mod. 37 - Report on the state of the Fe... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19012 | Church of Ireland Centre | Box 36 | 1821 | Model School:Mod. 38 - Letter to Committee from Sara... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19028 | Church of Ireland Centre | Box 36 | 1821 | Model School:Mod. 98 - List of twenty-six names bein... | Records of the Society for Promoting the Education of the Poor of Ireland |
| 19444 | Cloyne Diocesan Archive (RC) | Box B | 1821 | 1792.06/3/1821 Letter. T R England, North Chapel, Co... | Bishop Collins |
| 19458 | Cloyne Diocesan Archive (RC) | Box D | 1820 | 1791.00/6/1820 Rules of Doneraile General Free-Schoo... | Bishop Copinger |
| 19459 | Cloyne Diocesan Archive (RC) | Box D | 1821 | 1791.00/3/1821 Account of case between Mrs Baldwin ... | Bishop Copinger |
| 19460 | Cloyne Diocesan Archive (RC) | Box D | 1755
1821 | 1791.00/8/1821 Printed booklet Statutes of United D... | Bishop Copinger |
| 3692 | Cork City and County Archives | U336/2 | 1821 | 'A Calendar of Prisoners in the custody of Henry... | |
| 22910 | Delany Archive | Box Bp/01 File JKL.1821/ | 1821 | 01: 9 January 1821 Doyle to Mrs Joseph, convent, Mou... | Papers of Dr James Doyle, Bishop of Kildare & Leighlin |
| 21716 | Kerry Diocesan Archives (RC) | S71 | 1820 | Propaganda, regarding Bible Society, English Bible i... | Bishop Charles Sugrue, 1797-1825 |
| 12986 | Kilmainham Gaol Museum | 03MS-1B55-20 | 1821 | File on Mother Mary Aikenhead, regarding Butterly an... | |
| 20138 | Meath Local Studies and Family History Department | Box F/ | 1820 | 19 Letter to Blossett thanking him for his donation ... | Mountainstown Documents |
| 20165 | Meath Local Studies and Family History Department | Box C/ | 1821 | 22a Letter detailing expenses of lease, 1821 | Mountainstown Documents |
| 20183 | Meath Local Studies and Family History Department | Box G/ | 1820 | 4 Deed between John Chambre Earl of Meath and Judith... | Mountainstown Documents |
| 20226 | Meath Local Studies and Family History Department | Box I/ | 1821 | 35 Letter to Pollock, Mountainstown, 1821. | Mountainstown Documents |
| 20287 | Meath Local Studies and Family History Department | Box A/ | 1820 | 20 Letter to Arthur Pollock regarding land, 1820. | Mountainstown Documents |
| 20290 | Meath Local Studies and Family History Department | Box A/ | 1820 | 23 Letter to Arthur Pollock regarding Christmas dona... | Mountainstown Documents |
| 20608 | Meath Local Studies and Family History Department | Box E/ | 1820
1875 | 19 Lease to Thomas Russell by Frederick C. Bligh of ... | Mountainstown Documents |
| 8897 | National Archives of Ireland | M6933/10 | 1821
1822
1839
1840
1841 | Bundle of rentals of various portions of the Blake e... | Ballyglunin Papers |
| 8902 | National Archives of Ireland | M6934/16 | c1820 | Minutes of evidence in a case apparently concerning ... | Ballyglunin Papers |
| 8917 | National Archives of Ireland | M3254 | 1820 | Draft or copy Chancery Bill. Hercules Langford Rowle... | Clifden Papers |
| 11444 | National Archives of Ireland | | 1803
1821 | Letter from Custom Officials relating to the petitio... | Customs and Excise |
| 15327 | National Archives of Ireland | 99/56/5/5 | 1820 | Carhampton Papers. Appointment re. the estate of the... | Family and estate records. 1611-1948 |
| 15339 | National Archives of Ireland | 99/56/9/1/16 | 1820 | Papers relating to Co. Donegal. Assignment of mortga... | Family and estate records. 1611-1948 |
| 15345 | National Archives of Ireland | 99/56/4/5 | 1820 | Papers relating to Co. Donegal. Assignment of mortga... | Family and estate records. 1611-1948 |
| 1582 | National Library of Ireland | Ms3672 | 1820 | Poems of A M Colton of Norton Green presented to his... | |
| 2418 | National Library of Ireland | Ms9926 | c1821 | Commonplace Book of Lady Caroline Clements, c1821. | Leitrim Papers |
| 2712 | National Library of Ireland | Ms14121 | 1820 | A 'Christian Remembrancer', 1820, a pocket-book for ... | |
| 2868 | National Library of Ireland | Ms218 | 1821 | Copy of a play entitled 'Fitz-Gerald ou Le Comte de ... | |
| 2886 | National Library of Ireland | Ms1396 | c1821 | Typescript copy of a fragmentary census of Kilmore P... | |
| 2920 | National Library of Ireland | Ms8635 | 1820 | Legal documents concerning the trial of John Scanlon... | |
| 3058 | National Library of Ireland | Ms10075 | 1821 | Costs of a marriage settlement, etc., Wade to Fox, 1... | |
| 3068 | National Library of Ireland | Ms10169 | c1820 | Photocopy of a list of tenants on the Alcock estate,... | |
| 9551 | National Library of Ireland | Ms29770(55) | 1820 | Articles of agreement between Mary Doyne, Wingfield ... | Doyne Papers |
| 10879 | National Library of Ireland | Ms21559 | 1821 | Letter to Eliza Crosbie, Liverpool, from her mother,... | |
| 6773 | Public Record Office of Northern Ireland | D/2193/2 | 1820 | Judgement search relating to Helen Montgomery of Lar... | |
| 7166 | Public Record Office of Northern Ireland | D/2995 | 1820-1821 | 3 arithmetic and exercise books of Elizabeth Stewart... | |
| 7883 | Public Record Office of Northern Ireland | T/1126/1 | 1821
1831 | Copies of census extracts for Tamlaght-Finlagan, Ban... | |
| 7895 | Public Record Office of Northern Ireland | T/1156/1 | 1821 | Copy of a letter from Robert Peel, Whitehall, London... | |
| 8337 | Public Record Office of Northern Ireland | T/2460/1 | 1821 | Letter, with a copy, from Elizabeth Boardman, Port H... | |
| 8600 | Public Record Office of Northern Ireland | T/450 | 1821 | Draft copy of Kilmore census returns, 1821. | |
| 8687 | Public Record Office of Northern Ireland | T/787/1 | 1821 | Copy of an extract from a census for County Antrim, ... | |
| 8518 | Public Record Office of Northern Ireland | T/2938 | 1821 | Copy of a letter from Mrs Watt to Catherine Hutton c... | |
| 8595 | Public Record Office of Northern Ireland | T/425/ | 1821 | T/425/1 and T425/4 2 copies of population returns fo... | |
| 8666 | Public Record Office of Northern Ireland | T/715 | 1758-1850
1821 | This collection includes the following: A copy of a ... | |
| 8710 | Public Record Office of Northern Ireland | T/889 | 1816
1821 | This collection includes the following: Copies of no... | John Elliott and Johns Solicitors Papers |
| 4152 | Religious Society of Friends in Ireland Historical Library | Deed Box XIII/Folder 6:6 | 1821 | Elizabeth Beale: Married to William Beale, merchant ... | Deeds |
| 22058 | St Dympna's Hospital, Carlow | IE DA SDH | 1832-900 | Rough Proceedings of the Board of Governors:13 Febru... | St Dympna's Psychiatric Hospital, Carlow |
| 10238 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs10532 | 1816
1821 | Manuscript notes and printed excerpts relating to th... | William Mason Monck Papers |
| 10486 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs3750 | 1820 | Collection of autographs and copies of poems made by... | |
| 18404 | University of Galway Archives | LE21 | 1820 | Soft bound hand-written fair-copy manuscript of an a... | Strickland of County Roscommon |