Matvei Ivanovitch Platoff, count, a Russian general, of Greek origin, born about 1760, died in 1818. He was brought up among the Cossacks of the Don, and after many years' service in the Russian army became their hetman in 1801, and subsequently was made general of cavalry. He acquired great celebrity in 1812, when, after being defeated by the French at Grodno, and having retired into the interior, he returned with 20 regiments of Cossacks, terribly harassing the retreat of the invaders, and capturing many French soldiers and all their Moscow booty. He was equally formidable to the French in some of their subsequent disasters, especially at Leipsic. In 1814, while protecting the passage of the allied army through the valleys of the Marne and Seine, he committed fearful depredations. After the occupation of Paris, he went with Bliicher to London to receive a silver sword from the corporation of that city. The Russian government made him a count. He spent the rest of his life in retirement. In 1853 the emperor Nicholas placed a monument over his grave.