Theopompus (thē´ōpŏm´pəs), fl. 4th cent. BC, Greek historian and rhetorician, b. Chios. He studied with the orator Isocrates and became a friend of both Philip and Alexander of Macedon. His pro-Macedonian sympathies often caused trouble with his fellow Greeks. He wrote the Hellenica, a history of Greece from 411 BC to 394 BC, and the Philippica, a discursive chronicle of Philip's life.
"Theopompus." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (November 19, 2018). https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/theopompus
"Theopompus." The Columbia Encyclopedia, 6th ed.. . Retrieved November 19, 2018 from Encyclopedia.com: https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/theopompus