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In page Berengaria of Castile:

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Starting in 1198, Pope Innocent III objected to the marriage on the grounds of consanguinity and even threatened to excommunicate Alfonso, though the couple stayed together until 1204.[4][5] They vehemently sought a dispensation in order to stay together, including offering large sums of money.[6] The pope denied their request, but they succeeded in establishing the legitimacy of their children.[7] The marriage was dissolved in 1204. Berengaria returned to her parents in Castile in May, where she dedicated herself to the care of her children.[7] The eldest of them, Eleanor (1198/99-1202), had died; Constance (1200–1242), Ferdinand (1201–1252), Alfonso (1203–1272), and Berengaria (1204–1237) survived infancy.[citation needed]