Bernat Guillem de Montpeller also known as Bernat Guillem I d'Entença (Spanish:Bernardo Guillermo I de Entenza. b. ? - d. El Puig, 1238) was a noble of the Catalan House of Entença. He was the lord of Fraga. He is best known for his participation in the Conquest of Majorca and Valencia during the Reconquista. He died after the Battle of the Puig in 1238.[1]