FREDERICK WILLIAM III. (1770-1840), king of Prussia, eldest son of King Frederick William II., was born at Potsdam on the 3rd of August 1770. His father, then prince of Prussia, was out of favour with Frederick the Great and entirely under the influence of his mistress; and the boy, handed over to tutors appointed by the king, lived a solitary and repressed life which tended to increase the innate weakness of his character. But though his natural defects of intellect and will-power were not improved by the pedantic tutoring to which he was submitted, he grew up pious, honest and well-meaning; and had fate cast him in any but the most stormy times of his country's history he might well have left the reputation of a model king. As a soldier he received the usual training of a Prussian prince, obtained his lieutenancy in 1784, became a colonel commanding in 1790, and took part in the campaigns of 1792-94. In 1793 he married Louise, daughter of Prince Charles of Mecklenburg-Strelitz, whom he had met and fallen in love with at Frankfort (see LOUISE, queen of Prussia). He succeeded to the throne on the 16th of November 1797 and at once gave earnest of his good intentions by cutting down the expenses of the royal establishment, dismissing his father's ministers, and reforming the most oppressive abuses of the late reign. Unfortunately, however, he had all the Hohenzollern tenacity of personal power without the Hohenzollern genius for using it. Too distrustful to delegate his responsibility to his ministers, he was too infirm of will to strike out and follow a consistent course for himself. The results of this infirmity of purpose are written large on the history of Prussia from the treaty of Luneville in 1801 to the downfall that followed the campaign of Jena in 1806. By the treaty of Tilsit (July 9th, 1807) Frederick William had to surrender half his dominions, and what remained to him was exhausted by French exactions and liable at any moment to be crushed out of existence by some new whim of Napoleon. In the dark years that followed it was the indomitable courage of Queen Louise that helped the weak king not to despair of the state. She seconded the reforming efforts of Stein and the work of Scharnhorst and Gneisenau in reorganizing the army, by which the resurrection of Prussia became a possibility. When Stein was dismissed at the instance of Napoleon, Hardenberg succeeded him as chancellor (June 1810). In the following month Queen Louise died, and the king was left alone to deal with circumstances of ever-increasing difficulty. He was forced to join Napoleon in the war against Russia; and even when the disastrous campaign of 1812 had for the time broken the French power, it was not his own resolution, but the loyal disloyalty of General York in concluding with Russia the convention of Tauroggen that forced him into line with the patriotic fervour of his people.