Deel Castle (Caoslean na Daoile in Irish) was built in the 16th century by the Bourkes and later renamed Castle Gore. It is located near the town of Crossmolina, County Mayo, in Ireland
As the name suggests, the translation means “the Castle of the River Deel”. Deel Castle is a 16th-century tower house of the Bourkes which is close to the northern end of Lough Conn.
After Col. Thomas Bourke had fought on the side of King James in the Williamite Wars, the property was forfeited and given to the Gore family, afterwards Earls of Arran, who renamed it Castle Gore.