Charles Clark Gonzaga may refer to: Carlo Gonzaga of Milan (died 1456), Lord of Sabbioneta Carlo Gonzaga (condottiero) (1525–1566), Italian military leader Carlo I Gonzaga, or Charles I, Duke of Mantua (1580–1637), Lord of Montferrat, Duke of Nevers, Duke of Mayenne Charles II Gonzaga, (1609–1631), son of Carlo I, married to Maria Gonzaga Charles III, Duke of Mantua and Montferrat (1629–1665), son of Charles II Charles IV, Duke of Mantua and Montferrat (1652–1708), son of Charles III, last ruler of Mantua