Ὀρφεῖος
Ὀρφεῖος, of Orpheus, Orphic
Could not find Ὀρφείῳ in Logeion dictionaries.
Ὀρφείῳ Proper-name adjective: masculine dative singular, Proper-name adjective: neuter dative singular of Ὀρφεῖος
Ὀρφεῖος, ὁ (sc. μήν), month at Mytilene(?), Inscr.Magn. 52.38.