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In page Teresa Gil de Vidaure:

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Clement IV died in 1268, and Andrés Albalat, bishop of Valencia, declared the marriage null and void.[citation needed] Clement IV's successor, Pope Gregory X, allowed the case to be treated in Rome and confirmed his predecessor's decision.[2] James attempted procuring an annulment again in 1275, this time claiming that he had had sexual relations with Teresa Gil's cousin before their marriage (which would have rendered the marriage invalid), but the argument was no more successful than the previous one.[1]