Pedigrees of Some of the Emperor Charlemagne's Descendants, Vol. I @ p. 125
The cited information was published by Genealogical Publishing Co., Inc., Baltimore, 1986 (Ref: p. 125) The author/originator was von Redlich, Marcellus Donald Alexander R..
References (11)
Parent Source:
Pedigrees of Some of the Emperor Charlemagne's Descendants, Vol. I
Individual:
Lady Isabel Elizabeth De Vermandois Lady
Individual:
The Great Capet, Count Of Vermandois Hugh
Individual:
Adelaide Countess Of Vermandois
Individual:
Richard "Strongbow" 4th Earl De Clare
Individual:
Robert "The Just" De Beaumont Earl Of Leicester
Individual:
Roger De Beaumont , Lord De Pontaudemer
Individual:
Hawise Mabel de Beaumont
Individual:
William Mafonache Fitz Robert Earl of Gloucester
Individual:
Robert FitzHamon Earl of Gloucester
Individual:
Ranulph III de Meschines 3rd Earl of Chester, Viscount Bayeux