In Greek mythology, Caeneus was a Lapith hero of Thessaly.
Poseidon and Caenis, woodcut illustration of Ovid by Virgil Solis, 1563.
Caeneus fighting with a centaur, Attic lekythos with decoration in superposed colours, ca. 500-490 BC, Louvre (CA 2494).
The Lapiths were a group of legendary people in Greek mythology, who lived in Thessaly in the valley of the Peneus and on the mountain Pelion. They were believed to have descended from the mythical Lapithes, brother of Centaurus, with the two heroes giving their names to the races of the Lapiths and the Centaurs respectively. The Lapiths are best known for their involvement in the Centauromachy, a mythical fight that broke out between them and the Centaurs during Pirithous and Hippodamia's wedding.
Metope from the Elgin Marbles depicting a Centaur and a Lapith fighting.
A centauromachy relief on an ancient Roman sarcophagus, c. 150 AD, Museo Archeologico Ostiense.
Battle of Centaurs and Lapiths, by Piero di Cosimo (notice the female centaur with a male centaur in the foreground).