Note 12 — HISTORY OF THE IRON MASK.
Reading edition
The Empress Eleanor was daughter of Charles, Duke of Rhetelois, who died in the life-time of his father, Charles I. Duke of Mantua, in spite of which he is generally denominated by historians, Charles II., Duke of Mantua. She became, on the 30th of April, 1651, the third wife of Ferdinand III., Emperor of Germany, whom she survived many years, and died December 5th, 1686. She was the aunt of Ferdinand Charles IV., Duke of Mantua.