MATTHIOLI, Count Girolamo. Born in 1640. Minister to Charles III., the Duke of Mantua, he was commissioned to negotiate the secret Treaty with France, but he sold the secret. The French Ambassador was informed of this treachery, enticed him to French territory, and had him arrested and confined at Pignerol; for a long time he was supposed to be the "Man in the Iron Mask." In 1681 he was taken to Exiles with the "Man in the Iron Mask," and in 1687 one of the two died. The dead man was thought to be Matthioli.
MATUSIEWICZ, Count* (1790-1842). Russian diplomatist.
MECKLENBURG-SCHWERIN, the Dowager Grand Duchess of** (1771-1871). By birth a Princess of Hesse-Homburg, and stepmother to the Duchesse d'Orléans.
MECKLENBURG-SCHWERIN, Duke Gustavus of* (1781-1861). One of the sons of the Grand Duke Francis of Mecklenburg-Schwerin.
MECKLENBURG-SCHWERIN, Duke Albert of (1812-1842). Son of the Grand Duke Frederick Francis and of the Princess Caroline of Saxe-Weimar, and brother of the Duchesse d'Orléans.
MECKLENBURG-SCHWERIN, the Grand Duke Frederick of (1823-1883). His mother was a Prussian Princess. He was a good soldier, and fought with distinction. He was thrice married.
MECKLENBURG-STRELITZ, the Grand Duke George of** (1779-1860). He married in 1817 a Princess of Hesse-Cassel.
MECKLENBURG-STRELITZ, Hereditary Grand Duke Frederick William of (1819-1904). Succeeded his father in 1860. He became blind at an early age, and married the eldest daughter of Adolphus, Duke of Cambridge.
MECKLENBURG-STRELITZ, Duke George of (1824-1876). Younger brother of the foregoing. He entered the Russian service, and married the Grand Duchess Catherine, daughter of the Grand Duke Michael of Russia.
MEDEM, Count Paul* (1800-1854). Russian diplomatist and cousin of the Duchesse de Talleyrand.