 However, in an earlier passage, Livy wrote that he arrived in Hispania before Tiberius Gracchus, who gave him a message with instructions for his predecessor, Quintus Fulvius Flaccus.Appian wrote about two more episodes about the campaign of Tiberius Gracchus.He wrote that the city of Caravis (Magallon, in north-western Aragon), an ally of Rome, was besieged by 20,000 Celtiberians.