House of Lara
He was the brother of Juan Núñez II de Lara, head of the House of Lara, of Teresa Núñez de Lara y Haro, and of Juana Núñez de Lara, who married Ferdinand de la Cerda, Lord of Lara (1275–1322), son of the infante Ferdinand de la Cerda and grandson of Alfonso X of Castile.