Towards the end of the 13th century, the Guelphs had secured their control of Florence through their multiple victories over the Ghibellines, including the battle at Benevento in 1266, and at Campaldino and Caprona in 1289. In 1267, as part of a political reconciliation, Guido married Beatrice, the daughter of Ghibelline party leader Farinata degli Uberti. Their marriage union proved unsuccessful, as the feuds between Guelph and Ghibelline families persisted.