Lewis & Short

4. Gallus, i, m., a Roman surname in the gens Cornelia, Aquilia, Sulpicia, etc. So in partic. C. Cornelius Gallus, of Forum Julii, a Roman poet, a friend of Virgil, Verg. E. 10; Ov. Am. 3, 9, 64; Asin. Pollio ap. Cic. Fam. 10, 32, 5.