From Cokayne's Complete Peerage (1945), Volume X, Appendix H, page 101: "Gilbert...

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From Cokayne's Complete Peerage (1945), Volume X, Appendix H, page 101: "Gilbert's stepdaughter is the 7th and last of Henry I's illegitimate daughters enumerated by Robert de Torigny, and the only one by Elizabeth or Isabel de Meulan."

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