The name Oliver originates from the Old French name Olivier, which is possibly derived from the Latin word 'oliva', meaning 'olive tree'. It may also have roots in Germanic names such as Old Norse Áleifr or Frankish Alawar, with the spelling influenced by the Latin term. The name gained prominence in Western Europe during the Middle Ages due to the French epic 'La Chanson de Roland', where Olivier is depicted as a close companion and advisor to the hero Roland. In England, Oliver was a common me...