References for Thomas 4th Earl, 2nd Earl, 7th Lord, 8th Lord de Mowbray * of Norfolk * of Nottingham * Mowbray * Segrave and Stourton
Sir B.Burke: Burke's Peerage and Baronetage. London, 1999
F.M.Powicke, E.B.Fryde: Handbook of British Chronology. London, 1961