References for Alonso Garcia Señor de Villamayor * de Villamayor, Celada and Sisamón

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C. Cawley: Medieval Genealogy. http://fmg.ac Medieval Genealogy Foundation, 2006
D.Schwennicke: Europäische Stammtafeln, Vol. III/1, Tafel 127. Marburg, 1984
S.de Vajay: From Alfonso VII to Alfonso X - The first two Centuries of the Burgundian Dynasty in Castile and Leon. 1989