lfonso IX, 1171-1230, Spanish king of Leon
(1188-1230), son and successor of Ferdinand II. He conquerored
from the Moors several cities in Estremadura and was frequently
at war with Alfonso VIII of Castile. His marriages with Teresa of
Portugal and Berenguela of Castile were both annulled by the pope.
He defeated (1230) the Moors at Mérida. His son by Berenguela,
Ferdinand III, reunited (1230) Leon and Castile. [The Illustrated
Columbia Encyclopedia, 3rd ed., 1969]