King Attalus III, who ruled Pergamon from 138-133 BC, was the last Attalid king. The Attalids were a Hellenistic dynasty descended from one of Lysimachus’ officers, who ruled the city after his death. Lysimachus was one of the generals of Alexander the Great who took a share of his newly captured empire after the conqueror died. Attalus III had no heirs and bequeathed his kingdom to the Romans. Tiberius Gracchus requested that his vast treasury be made available to help the Roman people, but the senate refused.