Caisleán Uí Bhriain

Caisleán Uí Bhriain was built by the Ó Briain (O'Brien) family, a prominent Gaelic Irish dynasty, during the late medieval period, likely in the 15th or 16th century. It is remembered as a symbol of the Ó Briain's territorial influence in west Connacht and their resistance to English expansion during the Tudor conquest of Ireland.