Sources:
1. Title: The Plantagenet Ancestry
Abbrev: Turton
Author: William Henry Turton
Publication: Genealogical Publishing Company, London, England, 1968,
originally 1928
2. Title: Ancestors of Paul McBride
Abbrev: McBride
Publication: On Line, http://www.tiac.net/users/pmcbride/genweb.html, 1999