Romulus: Lupercalia

τὰ δὲ Λουπερκάλια τῷ μὲν χρόνῳ δόξειεν ἂν εἶναι καθάρσια: δρᾶται γὰρ ἐν ἡμέραις ἀποφράσι τοῦ Φεβρουαρίου μηνός, ὃν καθάρσιον ἄν τις ἑρμηνεύσειε, καὶ τὴν ἡμέραν ἐκείνην τὸ παλαιὸν ἐκάλουν Φεβράτην. τοὔνομα δὲ τῆς ἑορτῆς ἑλληνιστὶ σημαίνει Λύκαια, καὶ δοκεῖ διὰ τοῦτο παμπάλαιος ἀπ᾽ Ἀρκάδων εἶναι τῶν περὶ Εὔανδρον.

ἀλλὰ τοῦτο μὲν κοινόν ἐστι: δύναται γὰρ ἀπὸ τῆς λυκαίνης γεγονέναι τοὔνομα.

...As for the Lupercalia, judging by the time of its celebration, it would seem to be a feast of purification, for it is observed on the inauspicious days of the month of February, which name can be interpreted to mean purification, and the very day of the feast was anciently called Febrata. But the name of the festival has the meaning of the Greek ‘Lycaea,’ or feast of wolves, which makes it seem of great antiquity and derived from the Arcadians in the following of Evander.

Indeed, this meaning of the name is commonly accepted; for it can be connected with the she-wolf of story.