Ηναῖος → Ἠναῖος (Enaios: Doric month name)

[spiros]

Ηναῖος, ὁ, name of month, Hesperia27.75.14 (c.200 B.C., unknown provenance).
Liddell, Scott, Jones Ancient Greek Lexicon (LSJ)

[billberg23]

Yes, it needs a smooth breathing (Ἠναῖος).  It appears on an inscription from an unidentified Doric town, possibly of the second century BCE.  David M. Robinson wrote that it was "possibly" the name of a Dorian month.

[spiros]

Thanks!