 Alis Reigny was a daughter and co-heiress of Sir William Reigny of "Assholt"; Alice Widworthy was the daughter and heiress of Sir Hugh Widworthy of Lustleigh.By whichever wife Sir William Prouz had a daughter and heiress Alis Prouse (1286-1335), who married Roger Mules (d.1323) after his marriage seated at Lustleigh.Sir William le Prouz ordered in his will to be buried amongst his ancestors at Lustleigh, but was in fact buried at Holberton.