Philinus of Agrigentum (3rd-century BCE), Magna Graecia, was a historian who lived during the First Punic War, who is said to have written history from a pro-Carthaginian standpoint.
His writings were used as a source by Polybius and Diodorus for their descriptions of the First Punic War.
[1] Philinus maintained that the initial Roman intervention in Sicily at the start of the First Punic War violated a treaty between Rome and Carthage from 306 B.C.E.
which recognized Roman sovereignty on the Italian peninsula and Carthaginian control in Sicily.
[2] However, evidence from Servius suggests that there may have been a real treaty, thereby potentially exonerating Philinus' account.