From the "Illegitimate" section of King Henry's Wikipedia article, which lists I...

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From the "Illegitimate" section of King Henry's Wikipedia article, which lists Isabel as his 7th illegitimate daughter - "Isabel, daughter of Isabel de Beaumont, Countess of Pembroke.[343]" [343] Thompson, Kathleen (2003). "Affairs of State: the Illegitimate Children of Henry I". Journal of Medieval History. 29 (2): 129–151. doi:10.1016/S0304-4181(03)00015-0. ISSN 0304-4181. S2CID 144398531.

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