Pedro Fernández de Velasco, 2nd Count of Haro

In 1473 Henry IV named him sixth Constable of Castile and made this title hereditary in his family.

He participated in the conquest of Úbeda and Baeza, which both occurred on Saint Andrew's day.

He also fought against the Moors in the battles of Gibraltar and Archidona and participated in the conquest of Granada, where he died.

He and his wife are buried in the Capilla del Condestable in the Burgos Cathedral.

He married Mencía de Mendoza y Figueroa (1430-1470), daughter of Íñigo López de Mendoza, 1st Marquis of Santillana, with whom he had seven children :