Antimăchus in Harpers Dictionary of Classical Antiquities
（Ἀντίμαχος). A Greek poet and critic of Colophon, an elder contemporary of Plato, about B.C. 400. By his two principal works-the long mythical epic called Thebaïs (Quint.x. 1） and a cycle of elegies named after his loved and lost Lydé, and telling of famous lovers parted by death -he became the founder of learned poetry, precursor and prototype of the Alexandrians, who, on account of his learning, assigned him the next place to Homer among epic poets. (See Canon Alexandrinus.) In striving to impart strength and dignity to language by avoiding all that was common, his style became rigid and artificial, and naturally ran into bombast. But we possess only fragments of his works. As a scholar, he is remarkable for having set on foot a critical revision of the Homeric poems. See Homerus.
Antimachus in Wikipedia
Antimachus, of Colophon or Claros, Greek poet and grammarian, flourished about 400 BC.
Scarcely anything is known of his life. His poetical efforts were not generally appreciated, although he received encouragement from his younger contemporary Plato (Plutarch, Lysander, 18).
His chief works were: an epic Thebais, an account of the expedition of the Seven against Thebes and the war of the Epigoni; and an elegiac poem Lyde, so called from the poet's mistress, for whose death he endeavoured to find consolation telling stories from mythology of heroic disasters (Plutarch, Consul, ad Apoll. 9; Athenaeus xiii. 597).
Antimachus was the founder of "learned" epic poetry, and the forerunner of the Alexandrian school, whose critics allotted him the next place to Homer. He also prepared a critical recension of the Homeric poems.
He is to be distinguished from Antimachus of Teos, a much earlier poet to whom the lost Cyclic epic Epigoni was apparently ascribed (though the attribution may result from confusion).