The Plantagenet Ancestry of King Edward III and Queen Philippa @ p. 99
The cited information was published by Morman Pioneer Genealogical Society, Salt Lake City, 1985 (Ref: p. 99) The author/originator was Moriarity, George Andrew.
References (6)
Parent Source:
The Plantagenet Ancestry of King Edward III and Queen Philippa
Individual:
Maud Fitzrobert De Gloucester
Individual:
Hawise Mabel de Beaumont
Individual:
William Mafonache Fitz Robert Earl of Gloucester
Individual:
Maud Amabel Sibyl Fitz Hammon Countess of Gloucester
Individual:
Sybil de Montgomery