The Brett family acted as land agents in the Tobercurry area dealing with land in the parishes of Achonry and Kilmacteige. John Brett, land agent, gave evidence before the Devon Commission on land holding in July 1844. From Griffith's Valuation it would appear that John Brett leased property from the Wynne, Taaffe, Ormsby and Wingfield estates in the Baronies of Lyney and Corran. He was also leasing a house in the town of Tobercurry to the value of £16 15s from the Irwin estate. John and Henry Brett are recorded as owning over 1500 acres in county Sligo in the 1870s. In 1876 over 400 acres of the Brett estate was offered for sale in the Landed Estates Court including lands at Tullycusheenmore, barony of Leyny and houses in the town of Tobercurry. The family vault is in Achonry Graveyard where a John Brett was laid to rest in 1871.
- Estate Collection ; Sligo County Library
- GO MSS 111c. Copy of grant of arms to descendents of John Brett of Carrowent, Dromore West, county Sligo. 1921. ; National Library of Ireland
- Landed Estates' Court Rentals (O'Brien), Brett, 28 April 1876, Vol 123, MRGS 39/056, (microfilm copy in NUIG); National Archives 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] : 53?
- PARLIAMENTARY PAPERS. ''Return of owners of land of one acre and upwards, in the several counties .... in Ireland''. HC 1876, LXXX: 320
- ''GRIFFITH'S VALUATION OF IRELAND'[Primary Valuation of Tenements]', 1850-1858. : Tobercurry Union 38