Ludwik Mieroslawski, a Polish revolutionist, born at Nemours, France, in 1814. He is the son of a Polish officer in the French service, and was educated at the military school in Kalisz. lie joined the revolutionists in served with distinction in the campaigns of the following year, and after the fall of Warsaw removed to Paris. He published various books in Polish and French, and among others a critical military history of the Polish revolution. He was selected by the democratic organization of the Poles at Paris as principal leader for the next rising of Poland. This failed, however (1846), and Mieroslawski was arrested, tried at Berlin, and imprisoned under sentence of death. The Berlin revolution of March, 1848, opened his prison, and he immediately hastened to the duchy of Posen, and armed for another Polish rising. A bloody conflict was the result. The Poles gained a signal victory at Miloslaw; but after some reverses Mieroslawski resigned his command, and the insurgents were disarmed (May). Early in is 19 he was summoned to Sicily to take command of the revolutionary forces; but after being wounded in the defence of Catania (March), he resigned his post.

Once more he took command of a revolutionary army in Baden, but after a few encounters with the Prussians he was obliged to retire to the fortress of Rastadt, which surrendered soon after (July), and he returned to Paris. He took a brief part in the Polish insurrection of 1863, Ins command being disastrously defeated at Kaziejewo on Feb. 22. He again returned to France, where he has since published several works on the political dissensions among the Polish emigrants.