References for Joan of Lancaster
J. Dupont, J. Saillot:
Cahiers de Saint-Louis.
Nantes, Angers, 1976 etc.
D.Schwennicke:
Europäische Stammtafeln, Vol. II, Tafel 83.
Marburg, 1984
F.L.Weis:
Ancestral Roots of Sixty Colonists.
6th Ed., Baltimore, 1988