Ancestry of Richard Plantagenet & Cecily de Neville @ chart 1239, d of Guillaume II "le Grand" C de Bourgogne & Macon
& Etienne de Longwy, sister to Pope Calixtus II
The cited information was published by published by author, 1978 (Ref: chart 1239, d of Guillaume II "le Grand" C de Bourgogne & Macon
& Etienne de Longwy, sister to Pope Calixtus II) The author/originator was Ernst-Friedrich Kraentzler.