William was the son of sir Thomas de Maule and Catherine Cramond. The date and place of his birth have not been found.
William de Maule
sir Thomas de Maule (c1430->1497/98)
sir Thomas de Maule (-c1450)
sir Thomas de Maule (c1370-1411)
Elizabeth Gray (c1378-?)
Mary Abercrombie
sir Thomas Abercrombie
Catherine Cramond