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