References for Mary Howard

---

Sir B.Burke: The Dormant and Extinct Peerage. London, 1866
Sir B. Burke: A Genealogical History of the Dormant, abeyant, forfeited and extinct peerages of the British Empire. London, 1866
J. Dupont, J. Saillot: Cahiers de Saint-Louis. Nantes, Angers, 1976 etc.
D.Schwennicke: Europäische Stammtafeln, Vol. II, Tafel 87. Marburg, 1984