In Clonbrock sat the Dillon family. Lord Clonbrock was listed as a resident proprietor in county Galway in 1824. At the time of Griffith's Valuation, Lord Clonbrock was one of the principal lessors in the parishes of Ahascragh, Fohanagh, Killalaghtan and Killosolan in the barony of Kilconnell and Killoran in the barony of Longford. In the 1870s the Clonbrock estate in county Galway amounted to over 110 km2 (28,000 acres). Lands, house and demesne at Cahir, barony of Clonmacnowen, owned by James Dillon, were offered for sale in the Encumbered Estates court in July 1854. In 1906 Lord Clonbrock held over 8.1 km2 (2,000 acres) of untenanted land and the mansion house at Clonbrock.