Don Juan Manuel was a Spanish medieval writer, nephew of Alfonso X of Castile, son of Manuel of Castile and Beatrice of Savoy. He inherited from his father the great Lordship of Villena, receiving the

Blanche of Castile was by birth a member of the Castilian House of Burgundy. She was the only child of Infante Peter of Castile and Infanta Maria of Aragon.