sentences:  The Ballinalacken O'Briens trace their descent from "Turlough Don" who died in 1528, and also from the Ennistymon branch of the O'Briens, which was founded by Sir Donald O'Brien of Dough Castle (Lahinch) who died in 1579.In 1641-2 it was held by Daniel O'Brien of Dough and in 1654 a Cromwellian officer ordered the castles of Dough and Ballinalacken to be preserved from the dismantling of fortifications.In the 1667 Act of Settlement a Captain Hamilton became owner, but the O'Briens regained possession.