Jean, Count de BRIENNE, KING OF JERUSALEM
He married Berenguela, Princess of LÉON and Castile 1222 . Berenguela, Princess of LÉON and Castile was born at of Léon, Léon, Spain 1198/99 daughter of Alfonso IX Fernandez, King of Léon & Castile and Berenguela, Queen of Castile .
They were the parents of 4
children:
Alphonse de Brienne
born 1172.
Yolanthe de Brienne
born 1211.
Louis "d'Acre" de Brienne, Viscount de Beaumont
born Abt 1265.
Jean de Brienne
born Abt 1217.
Jean, Count de Brienne, King of Jerusalem died 21 Mar 1237 at Constantinople, Turkey .
Berenguela, Princess of LÉON and Castile died 12 Apr 1237 .