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In page Dangereuse of L'Île-Bouchard:

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Some[citation needed] believe that Raymond of Poitiers was a child of William by Dangereuse, rather than by Philippa of Toulouse. A primary source that names his mother has not so far been identified. However, he is not named in other sources as a legitimate son of Willam IX. It is therefore reasonable to suppose that he was born from the duke's relationship with Dangereuse. If this is the case, Dangereuse was grandmother to Bohemund III of Antioch, Maria of Antioch and Philippa of Antioch.