sentences:  The oldest part is the tall eastern tower, likely built in the 15th century.In 1564 the O'Connors lost their territory and in 1584/5 the castle was formally ceded to Sir Turlough O'Brien.Following the 1641 rebellion and subsequent Cromwellian reorganization, Turlough's son Daniel petitioned the English Commission in 1654 to save the house from demolition.