Who married Henry of Flanders?

Henry of Flanders (1178? – 11 June 1216) was Latin emperor of Constantinople from 1206 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.

Agnes of Montferrat (c. 1187 – 1207/1208) was the first empress consort of Henry of Flanders, Latin Emperor of Constantinople.

Maria of Bulgaria was the second empress consort of Henry of Flanders, Latin Emperor of Constantinople.