Ancestry of Richard Plantagenet & Cecily de Neville @ chart 1534, s of Alfonso III El Grande King of Asturias & Galicia, no mother
The cited information was published by published by author, 1978 (Ref: chart 1534, s of Alfonso III El Grande King of Asturias & Galicia, no mother) The author/originator was Ernst-Friedrich Kraentzler.