Note 29 — HISTORY OF THE IRON MASK.

Vincent Gonzaga, Count of St. Paul, afterwards Duke of Guastalla, was descended from a younger son of Ferrant II., first Duke of Guastalla. After contesting for many years his right to that Duchy with Ferdinand Charles IV., Duke of Mantua; during which they were both merely made use of, by turns, as the instruments of the French and Austrian domination; he was finally successful in establishing himself at Guastalla in 1706, where he died April 28th, 1714. By his wife, Maria Victoria, second daughter of Ferdinand III., Duke of Guastalla, he left two sons, who successively succeeded him in the sovereignty of that Duchy.