Guillaume was the son of Berà III de Razès and Olba ou Alda. The date and place of his birth have not been found.
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Berà III de Razès |
Sigisbert V de Rennes |
Sigisbert IV de Rennes |
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Magdala d'Austrasie |
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NN d'Urgel et Cerdagne |
Uthman ibn Abu-Musá |
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Lampade d'Aquitaine |
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