Margaret de Mowbray noblewoman; Peerage person ID=2117 (1388–1459) Parents Elizabeth FitzAlan Thomas de Mowbray, 1st Duke of Norfolk Children Katherine Howard Margaret Howard John Howard, 1st Duke of Norfolk Siblings Elizabeth de Mowbray John de Mowbray, 2nd Duke of Norfolk Elizabeth Goushill Isabel de Mowbray Thomas de Mowbray, 4th Earl of Norfolk Joan Goushill Partners Sir Robert Howard