Berengaria of León

Berengaria of León (1204–1237) was the daughter of Alfonso IX of León and Berengaria of Castile, and a younger sister of Ferdinand III. In 1223 the twice-widowed John of Brienne, former king of Jerusalem, sought a bride among her family; he chose Berengaria and married her at Toledo in 1224. When John was elected Latin emperor in 1229 and crowned at Constantinople in 1231, she became empress of the Latin Empire.

Her daughter Marie married Baldwin II, while her sons served the kings of France. She died on 12 April 1237, within weeks of her husband.