Ancestry of Richard Plantagenet & Cecily de Neville @ chart 1066, d of Alfonso VI Ferdinandez King of Castile & León & Ximena Nunez de Guzmán
The cited information was published by published by author, 1978 (Ref: chart 1066, d of Alfonso VI Ferdinandez King of Castile & León & Ximena Nunez de Guzmán) The author/originator was Ernst-Friedrich Kraentzler.