Note 145 — BOOK VIII[61]
Alexander Teixeira de Mattos translation
William IX. Landgrave, later William I. Elector of Hesse-Cassel (1743-1821), a field-marshal in the Prussian service, reigning Count of Hanau (1764) and Landgrave of Hesse (1785). He entered into the coalition against France in 1792, went through the campaign of 1793, and concluded a treaty of peace with the Republic in 1795. In 1803, he changed his title of Landgrave for that of Elector, but after the battle of Jena (1806) he was deprived of his sovereignty, which he did not recover till 1813. He died in 1821. The Landgraviate of Hesse-Cassel was absorbed into Prussia in 1866.—T.