References for Alice Plantagenet

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Sir B. Burke: A Genealogical History of the Dormant, abeyant, forfeited and extinct peerages of the British Empire. London, 1866
A. Freer: The Descendants of William the Conqueror. http://freepages.genealogy.rootsweb.com/~conqueror/genealogy_html
D.Schwennicke: Europäische Stammtafeln, Vol. II, Tafel 84. Marburg, 1984