Maurice de Berkeley 1243 and, on 14 December 1243, he had livery of his father's lands. He fought in the war in North Wales and in 1264 he joined the Barons against King Henry III. Berkeley died on 4 April 1281 and was buried in St Augustine's Abbey in Bristol. Maurice de Berkeley Sir Maurice de Berkeley "the Resolute" (1218 - 4 April 1281), 5th (feudal) Baron de Berkeley, was an English soldier and rebel, residing at Berkeley Castle in the English county of Gloucestershire. Maurice was born in 1218 to Thomas de Berkeley and Joan de Somery. He married Isabel FitzRoy, the
Hailes Castle the oldest constructions of its kind in Scotland. The superiority of the lands was held by the Earls of Dunbar and March. The de Gourlays, a Northumbrian family, supported the English in the Wars of Independence, and their land was forfeited by order of the Scottish Crown. Hailes Castle and lands were then confirmed upon another Northumbrian, Sir Adam de Hepburn (d. before 1371), who, in the reign of David II, had a charter of the lands of Traprain, and Southalls and Northalls (now united and called Hailes) in Haddingtonshire, as well as the lands of Mersingtoun, Cockburnspath, and Rollanstoun