Ancestry of Richard Plantagenet & Cecily de Neville @ chart 1460, 1157, s of Richwin C de Verdoun & Kunigunde de France
The cited information was published by published by author, 1978 (Ref: chart 1460, 1157, s of Richwin C de Verdoun & Kunigunde de France) The author/originator was Ernst-Friedrich Kraentzler.