Beltrán de la Cueva, 1st Duke of Alburquerque
Beltrán de la Cueva y Alfonso de Mercado, 1st Duke of Alburquerque was a Spanish nobleman who is said to have fathered Joanna, the daughter of Henry IV of Castile's wife Joan of Portugal. Wikipedia
Born: 1435, Úbeda, Spain
Died: November 1, 1492 (age 57 years), Cuéllar, Spain
Great grandchildren: Gabriel de la Cueva, 5th Duke of Alburquerque, María Colón de la Cueva, Pedro Téllez-Girón y de la Cueva, 1st Duke of Osuna, and more
Partner: María de Velasco y Mendoza (1482–), Mencía de Mendoza y Luna, and Mencía Enríquez de Toledo
Grandchildren: Beltrán de la Cueva, 3rd Duke of Alburquerque, María de la Cueva y Toledo, Luis de la Cueva y Toledo, and more