High Quality Content by WIKIPEDIA articles! William de Braose, 3rd Lord of Bramber (fl. 1135–1179) was a 12th-century Marcher lord who secured a foundation for the dominant position later held by the Braose family in the Welsh Marches. In addition to the family`s English holdings in Sussex and Devon, William had inherited Radnor and Builth, in Wales, from his father Philip. By his marriage he increased the Braose Welsh holdings to include Brecon and Abergavenny.