A Russian general and field-marshal, of Scottish descent, and of the same family as Robert Barclay the Quaker; distinguished in successive Russian wars; his promotion rapid, in spite of his unpopularity as German born; on Napoleon's invasion of Russia his tactic was to retreat till forced to fight at Smolensk; he was defeated, and superseded in command by Kutusow; on the latter's death was made commander-in-chief; commanded the Russians at Dresden and Leipzig, and led them into France in 1815; he was afterwards Minister of War at St. Petersburg, and elevated to the rank of prince (1761-1818).