Corfe Castle, a famous ruin, has been a royal castle from the time of William the Conqueror. It was heroically defended on behalf of King Charles I by the wife of Chief Justice Sir John Bankes (1589–1644), Dame Mary (1598–1661) in 1643, and again by her, as his widow, in 1645 and 1646. She was granted the seal and keys for her courage. As it was almost destroyed by the Parliamentary forces, her son, Sir Ralph Bankes (c.1631–1667), decided to build a new house, Kingston Hall, nearby – later renamed Kingston Lacy. In 1981, the estates of Corfe Castle and Kingston Lacy were bequeathed to the National Trust by Ralph Bankes (1902–1981) – one of the richest bequests in the Trust’s history.