Lupercal was the place where Romulus & Remus were suckled by the she-wolf [lupus = wolf, and the Lupercalia was held there every year on Feb. 15th. It was in honour of Lupercus, a name for Pan [of Lycaea]because he protected the flocks from wolves. The descriptions of the ceremonies certainly give the impression it had fertility overtones, or undertones; which MAY be explained by the Pan connection, since he was a god of fecundity & whatnot.