| 11600 | National Library of Ireland | Ms5097 | 1852-1898 | Minute Book of the Poor Law Relief Committee, Pallas... | |
| 11157 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs50971/21-5 | 1826 | Lists of tenants' holdings on various estates, 1826. | O'Brien Family |
| 11158 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5097/26 | 1836 | Memorandum of Lease Agreements, 1836. | O'Brien Family |
| 11159 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5097/27 | 1847 | Statement of rent arrears, 1847. | O'Brien Family |
| 11160 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5097/28-29 | 1848-1849 | Returns of tenants rated under £4 and £10, 1848-18... | O'Brien Family |
| 11161 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5097/1-20 | 1852-1859 | Letters to Robert O'Brien relating to estate matters... | O'Brien Family |
| 11162 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5097/30-1 | 1849 | Returns of defaulting tenants on Clare estate, 1849. | O'Brien Family |
| 11165 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5097/41-6 | | Notes relating to tithes on various estates, no date... | O'Brien Family |
| 11163 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5097/32-3 | 1849-1851 | Returns of Newmarket tenants to be made monthly tena... | O'Brien Family |
| 11164 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5097/34-9 | 1852-1853 | Kilrush Union Poor Rate Payment Ledger 1852-1853. | O'Brien Family |