Ross Castle (Irish: Caisleán an Rois) is the ancestral home of the O'Donoghue clan though it is better known for its association with the Brownes of Killarney who owned it until recently. It is located on the edge of Lough Leane, in Killarney National Park, County Kerry. Ross Castle was built in the late 15th century by local ruling clan the O'Donoghues Mor (Ross), though ownership changed hands during the Desmond Rebellion of the 1580s to the Mac Carty Mor. He then leased the castle and the lands to Sir Valentine Browne ancestor of the Earls of Kenmare. The castle was amongst the last to surrender to Oliver Cromwell's Roundheads during the Irish Confederate Wars, and was only taken when artillery was brought by boat via the River Laune. Reference: Wikipedia