Berengaria (Castilian: Berenguela; 1179 or 1180 – 8 November 1246) was Queen of Castile in 1217 and Queen consort of León from 1197 to 1204. As the eldest child and heir presumptive of Alfonso VIII of Castile, she was a sought after bride, and was engaged to Conrad, the son of Holy Roman Emperor Frederick I Barbarossa. After his death, she married her cousin, Alfonso IX of León, to secure the peace between him and her father. She had five children with him before their marriage was voided by Pope Innocent III.