References for John I. de Botetourt

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O.F. Buck, T.F. Beard: Pedigrees of Some of the Emperor Charlemagne's Descendants, Vol III., S.7. Baltimore:Genealogical Publishing Co, 2002
G.Schwerdfeger: pers. Hinweise. 1998
F.L.Weis: Ancestral Roots of Sixty Colonists. 6th Ed., Baltimore, 1988