Geoffrey de Mandeville is the name of several important medieval English barons: Geoffrey de Mandeville (11th century) (died 1100), during the reign of William the Conqueror Geoffrey de Mandeville, 1st Earl of Essex (died 1144), son of William de Mandeville and grandson of Geoffrey de Mandeville, become an outlaw during The Anarchy Geoffrey de Mandeville, 2nd Earl of Essex (died 1166), one of three sons of the 1st Earl Geoffrey FitzGeoffrey de Mandeville, 2nd Earl of Essex (1191–1216), opponent of King John of England Geoffrey de Mandeville (c. 1070 – c. 1119), Sheriff of Devon from 1100, and baron of Marshwood
See also Mandeville (disambiguation)