Baldwin, the name of two emperors of Constantinople. - Baldwin I. (the ninth Flemish count of that name), born in Valenciennes in 1171, died in 1205 or 1206. He brought to a close a war with Philip Augustus, appointed his uncle William, his brother Philip, and Bouchard d'Avesnes regents of Flanders, took holy orders in Brussels in 1200 or 1201, and joined the crusaders, together with his brother Thierry. Subsequently he cooperated with the Venetians under Dandolo, and with the connivance of Alexis, son of the deposed Byzantine emperor Isaac, in the capture of Constantinople, when he was crowned as emperor, May 16, 1204. His power was only nominal, the crusaders dividing the Byzantine provinces among their other leaders. Baldwin delivered Thrace from the Turkish invaders, but the Greeks having invoked the assistance of the Bulgarians against him, he was captured April 14, 1205, near Adrianople, and subjected to tortures from which he died. Some accounts, however, leave it doubtful whether he fell in battle or died in prison. - Baldwin II., last Latin emperor of Constantinople, born in 1217, died in 1273. He was a son of Peter de Courtenay, succeeded his brother Robert in 1228, and, though aided by the pope and King Louis IX., was finally driven from Constantinople by Michael Pahnoologus, who gained possession of the city by stratagem in July, 1261. Baldwin fled in disguise to the island of Negropont, and from thence to Italy, where he died in obscurity.