The Castle takes its name from ‘The Dean’ or wooded valley, a common place name in Scotland. However, until about 1700 it was called Kilmarnock Castle. Owned originally by the Boyd family, it has strong historical connections with many people and events famous in Scottish history. Robert the Bruce who gave the Boyds these lands; James III of Scotland whose sister married a Boyd; the Covenanters, some of whom were imprisoned here; Bonnie Prince Charlie, whose rebellion was joined by the 4th Earl of Kilmarnock and Robert Burns who was encouraged to publish his poetry by the Earl of Glencairn who owned the Castle at that time.