Fernando de la Cerda
Fernando de la Cerda (1275–1322) was the younger son of Castilian heir Ferdinand de la Cerda and Blanche of France, a grandson of Alfonso X of Castile and Louis IX. Born after his father's death in 1275, he grew up while his elder brother Alfonso, called the Disinherited, pressed the family's claim to the Castilian throne. Fernando served Alfonso XI as mayordomo mayor, or high steward.
By his marriage to Juana Núñez de Lara, known as la Palomilla, he was lord consort of Lara. Of their children, their daughter Blanche married the prince and writer Juan Manuel.