Francesco IV Gonzaga, Duke of Mantua
Francesco IV Gonzaga (7 May 1586 – 22 December 1612), was Duke of Mantua and (as Francesco II) Duke of Montferrat between 9 February and 22 December 1612. Biography. Born in Mantua, he was the eldest son of Duke Vincenzo I and Eleonora de' Medici. In 1607, Claudio Monteverdi dedicated his opera "L'Orfeo" to Francesco. The title page of the opera bears the dedication "Al serenissimo signor D. Francesco Gonzaga, Prencipe di Mantoua, & di Monferato, &c." Francesco became Duke upon his father's death on 9 February 1612. He died at Mantua on 22 December  1612 without male heirs. He was succeeded by his brother Ferdinand; however, Charles Emmanuel I, Duke of Savoy, the father of Francesco's wife Margaret of Savoy, disputed this, leading to the War of the Montferrat Succession (1613–1617). Family. On 19 February 1608 he married in Turin, Margaret of Savoy (1589–1655), daughter of Charles Emmanuel I, Duke of Savoy. They had: