William de Braose, 1st Baron Braose

Arms attributed to William de Breouse in the Camden Roll, ca 1280, blazoned there as "de azur od un leun rampant de or crusile d'or" William de Braose, (alias Breuse, Brewes, Brehuse,

Family and early life Braose was the son of John de Braose, the Lord of Bramber and Gower and John's wife Margaret, the daughter of Llywelyn the Great, prince of Gwynedd. His family had its origins at Briouze in Normandy.

Braose's father was dead in 1232, before 18 July, when William became lord of his father's properties. William came of age before 15 July 1245, Another charter records the gift of land near the road from Chichester to Bramber that was made at the urging of his mother Margaret. Other benefactions included gifs of rents and two small gifts of land. Around 1280, Braose released the priory from performing certain customary services and rents that it had previously paid to him and his ancestors. #tag:ref|The charter recording this grant stated it was because the inhabitants of the priory in the past "at our request have often taken care of our young horses and have brought up young hounds or harriers for us". He died at Findon in Sussex shortly before 6 January 1291. By his third wife, William had at least three children – Richard, Peter, and Margaret (wife of Ralph de Camoys, 1st Baron Camoys) – and possibly a fourth – William. Richard was dead before 9 February 1296, and Peter died before 7 February 1312.