Henry of Flanders

Henry (c. 1178 – 11 June 1216) was Latin emperor of Constantinople from 1205 until his death in 1216. He was one of the leaders of the Fourth Crusade in which the Byzantine Empire was conquered and Latin Empire formed. Life Henry was born in Valenciennes, France around 1178. He was the son of Count Baldwin V of Hainaut and Countess Margaret I of Flanders. Henry first married (in 1204) Agnes of Montferrat, daughter of Boniface of Montferrat. Henry's only child by his first wife Agnes died in childbirth with his mother. Some contemporary historians say that Henry made a peace with Bulgarians after the death of Kaloyan, and a marriage was arranged in 1213 between Henry and Maria, daughter of Kaloyan and stepdaughter of Tsar Boril of Bulgaria. Henry had a daughter with an unnamed mistress. This daughter, whose name is not recorded, probably (Margaret-Isabel) later married Alexius Slav, who established his own state in the Rhodope mountains. He was later given the title of despot.