sentences:  Pollio's contemporary history, though itself lost, provided much of the material for the historians Appian and Plutarch.As such, he significantly influenced posterity's perception of his time — a key moment in Roman history.According to the poet Horace ("Odes" 2.1.1-4), he dated the start of the Civil Wars to the consulship of Quintus Metellus Celer in 60 BC.