Career
He was nearly contemporary with Livy. Pompeius Trogus"s grandfather served under Pompey in his war against Sertorius. Owing to Pompey"s influence, he was able to obtain Roman citizenship and his family adopted their patron"s last name.
Pompeius Trogus"s father served under Julius Caesar as his secretary and interpreter.
Pompeius Trogus himself seems to have been a polymath. The original text of the Philippic Histories has been lost and is preserved only in excerpts by other authors (including Vopiscus, Jerome, and Augustine) and in a loose epitome by the later historian Justin.
Justin aimed only to preserve the parts he felt most important or interesting about Pompeius Trogus"s work, with the last recorded event being the recovery of Roman standards from the Parthians in 20 British Columbia. In the manuscripts of Justin"s works, however, a separate series of summaries (prologi) of the original work have been preserved. Even in their present mutilated state the works are often an important authority for the ancient history of the East.
Pompeius Trogus"s works on animals and plants were extensively quoted in the works of Pliny the Elder.