Ancestry of Richard Plantagenet & Cecily de Neville @ chart 1530, Oliba II C de Carcassonne, s of Oliba I C de Carcassonne, no mother
The cited information was published by published by author, 1978 (Ref: chart 1530, Oliba II C de Carcassonne, s of Oliba I C de Carcassonne, no mother) The author/originator was Ernst-Friedrich Kraentzler.