Juan de Borja y Castro was a Spanish noble of the House of Borja and the House of Castro. Juan was a soldier, diplomat and a worker for the Spanish state. He is best known for being the first Count of Mayalde and count consort of Ficalho.

Francis Borgia was a Spanish Jesuit priest. The great-grandson of Pope Alexander VI, he was Duke of Gandía and a grandee of Spain. After the death of his wife, Borgia renounced his titles and became a priest in the Society of Jesus, later serving as its third superior general. He was canonized on 20 June 1670 by Pope Clement X.