He [Giles de Breuse] married Joan, daughter of Richard DE BEAUMONT, of Witnesham, Suffolk. He died shortly before 6 February 1310/1. His wife survived him. [Complete Peerage II:305, (transcribed by Dave Utzinger)]
Joan were married in a religious ceremony after 1311 in 2nd husband 1st wife. She had a biological son and a biological daughter, named Robert and Margaret.