Mary married William De Braose (Breuse), [Baron Brewose] about 1269 in Of, , Yorkshire, England. William (son of John De Braose (Breuse), [LORD OF BRAMBER and Margred Verch Llywelyn, [PRINCESS OF NOR) was born in 1224 in Of, Bramber, Sussex, England; was christened in (21-Bef 1245); died on 6 Jan 1290. [Group Sheet] [Family Chart]