References for William Archbishop de Courtenay * of Canterbury

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Sir B.Burke: The Dormant and Extinct Peerage. London, 1866
Sir B.Burke: Burke's Peerage and Baronetage. London, 1999
J. Dupont, J. Saillot: Cahiers de Saint-Louis. Nantes, Angers, 1976 etc.
D.Schwennicke: Europäische Stammtafeln, Vol. III/4, Tafel 630. Marburg, 1989