Jonathon Pim, one of the secretaries of the Central Relief Committee, bought three small townlands in the parish and barony of Burrishoole, county Mayo, from the sale of the estate of the O'Donels of Newport in 1854. In 1876 Jonathon Pim, Member of Parliament for Dublin, owned 626 acres in county Mayo.
- Encumbered Estates’ Court Rentals (O’Brien), O’Donnell, 6 July 1854, Vol 30, MRGS 39/013 (microfilm copy in NUIG); National Archives of Ireland
- Pim Papers, leases and family papers relating to the Pim family, Mountmellick, Co Laois, 1698-1923. Acc. 1176; National Archives of Ireland
- Pim correspondence. MS 8669; National Library of Ireland
Contemporary printed sources
- HUSSEY DE BURGH, U. H. ''The Landowners of Ireland. An alphabetical list of the owners of estates of 500 acres or £500 valuation and upwards in Ireland''. Dublin: Hodges, Foster and Figgis, 1878. [available online at www.askaboutireland.ie] : 369
- PARLIAMENTARY PAPERS. ''Return of owners of land of one acre and upwards, in the several counties .... in Ireland''. HC 1876, LXXX: 311
- PARLIAMENTARY PAPERS. ''Return of Untenanted Lands in Rural Districts, Distinguishing Demesnes on Which There is a Mansion...'', HC 1906, c, 177: 369