It is of Latin origin, and the meaning of Oliver is "olive tree". Name of one of Charlemagne's knights in the 12th-century poem "Chanson de Roland". Also possibly from Alfihar (Old German) "host of elves" or Olafr (Old Norse) "ancestor". Biblical: the olive tree is a symbol of fruitfulness, beauty, and dignity. Today "extending an olive branch" traditionally signifies an offer of peace. Literary: the title character in Dickens' "Oliver Twist". Film director Oliver Stone; actor Oliver Platt.
Variations of Oliver are:
Noll, Oliverio, Olivero, Olivier, Oliviero, Olivio, Olivor, Olley, Ollie, Olliver and Ollivor.