St. Aloysius Gonzaga (Italian: Luigi Gonzaga, 9 March 1568–21 June 1591) was an Italian Jesuit and saint. He was born in the family’s castle in Castiglione delle Stiviere, between Brescia and Mantova in Italy. He was the oldest son of the condottiero Ferrante Gonzaga, a prince of the Holy Roman Empire, and Marta Tana Santena, daughter of a baron from Piemonte, of the Della Rovere family.