John de Mowbray, 2nd Duke of Norfolk English noble (1392–1432) (1392–1432) Parents Elizabeth FitzAlan Thomas de Mowbray, 1st Duke of Norfolk Children John de Mowbray, 3rd Duke of Norfolk Siblings Thomas de Mowbray, 4th Earl of Norfolk Elizabeth de Mowbray Elizabeth Goushill Margaret de Mowbray Isabel de Mowbray Joan Goushill Partners Katherine Neville, Duchess of Norfolk