sentences:  Before marrying Leonor, several marriage negotiations were made for the "infante", who became King Ferdinand I.In 1358 a marriage between him and Beatrice, the first-born daughter of King Peter I of Castile, was considered but never took place.In 1364 the marriage of Ferdinand to Infanta Joanna of Aragon, daughter of King Peter IV was negotiated, and years later, in late 1369, a marriage to another daughter of the Aragonese king, Infanta Eleanor was also pursued, but neither of these marriages came to pass.