Joan Mowbray (died 1410) (1363–1410) Parents John de Mowbray, 4th Baron Mowbray Elizabeth Segrave Children Sir Henry Grey Matilda Grey William Grey Thomas Grey John Grey, 1st Earl of Tankerville Siblings John de Mowbray, 1st Earl of Nottingham Thomas de Mowbray, 1st Duke of Norfolk Eleanor de Mowbray Margaret de Mowbray Partners Sir Thomas Tunstall Thomas Gray