Eth. Olmoneus. A village in Boeotia, situated 12 stadia to the left of Copae,
and 7 stadia from Hyettus. It derived its name from Olmus, the son of Sisyphus,
but contained nothing worthy of notice in the time of Pausanias. Forchhammer places
Olmones in the small island in the lake Copais, SW. of Copae, now called Trelo-Yani.
Dictionary of Greek and Roman Geography (1854) (ed. William Smith, LLD)