John de Braiose Lord of Buckinghamshire married Margaret ap Llewelyn
I have read that the parents of John de Braiose who married Margaret verch Llewelyn is the son of
William de Braiose IV (d. 1210 starved in prison by King John)
and Maud de Clare
OR
William de Braiose III Lord of Bramber (d. 8-21-1211 in France (in exile) and Maud de St. Valery (1155 to 1210 starved to death in prison by King John’s orders)
Which is it? Thank you in advance for your response :)