John, Lord Grey of Groy, married Adela, daughter and co-heir of William Fitz Osbert, son of Robert Crispin, Earl of Hereford, whose arms were:Gules a bend argent, over all a fesse or. Robert Crispin's wife was Aldreda, daughter of Ralph de Yvery, whose arms were: Or, threechevronels gules. In Howard's lately published "Life of L. J. Grey," the descent of this family is from Rollo to Sir Henry Grey of Turroc.