Ancestry of Richard Plantagenet & Cecily de Neville @ chart 1239, son of Gerhard von Egisheim? (source has the "?").
Title of "Princeps Regionis Civitatis Genvensis" rather than
that of Count.
The cited information was published by published by author, 1978 (Ref: chart 1239, son of Gerhard von Egisheim? (source has the "?").
Title of "Princeps Regionis Civitatis Genvensis" rather than
that of Count.) The author/originator was Ernst-Friedrich Kraentzler.