Juan Pacheco

Juan Pacheco, Marquess of Villena (1419 – 4 October 1474), was a nobleman and politician in fifteenth-century Castile whose career significantly influenced the reign of Henry IV of Castile. As the favorite, advisor and Mayordomo mayor to the future king, Pacheco accumulated numerous titles, offices, and territories, establishing himself as the dominant political figure of his era. Initially a close ally of the crown, he later led the aristocratic opposition to royal authority, including support for the symbolic deposition of Henry IV during the civil conflicts of the 1460s. As a skilled and pragmatic political strategist, Pacheco shifted alliances multiple times, supporting Infante Alfonso, then Isabella I of Castile, and ultimately Princess Joanna, to preserve and expand his influence. By his death in 1474, he had amassed one of the largest noble estates in Castile and elevated his family into the ranks of the high aristocracy. His titles included Marquess of Villena, 1st Duke of Escalona, and Master of the Order of Santiago.