History of Rome: Lupercalia Connection

iam tum in Palatio [monte] Lupercal hoc fuisse ludicrum ferunt, et a Pallanteo, urbe Arcadica, Pallantium, dein Palatium montem appellatum; ibi Euandrum, qui ex eo genere Arcadum multis ante tempestatibus tenuerit loca, sollemne allatum ex Arcadia instituisse ut nudi iuuenes Lycaeum Pana uenerantes per lusum atque lasciuiam currerent, quem Romani deinde uocarunt Inuum. huic deditis ludicro cum sollemne notum esset insidiatos ob iram praedae amissae latrones, cum Romulus ui se defendisset, Remum cepisse, captum regi Amulio tradidisse, ultro accusantes. crimini maxime dabant in Numitoris agros ab iis impetum fieri; inde eos collecta iuuenum manu hostilem in modum praedas agere. sic Numitori ad supplicium Remus deditur.

It is said that the festival of the Lupercalia, which is still observed, was even in those days celebrated on the Palatine hill. This hill was originally called Pallantium from a city of the same name in Arcadia; the name was afterwards changed to Palatium. Evander, an Arcadian, had held that territory many ages before, and had introduced an annual festival from Arcadia in which young men ran about naked for sport and wantonness, in honour of the Lycaean Pan, whom the Romans afterwards called Inuus. The existence of this festival was widely recognised, and it was while the two brothers were engaged in it that the brigands, enraged at losing their plunder, ambushed them. Romulus successfully defended himself, but Remus was taken prisoner and brought before Amulius, his captors impudently accusing him of their own crimes. The principal charge brought against them was that of invading Numitor's lands with a body of young men whom they had got together, and carrying off plunder as though in regular warfare. Remus accordingly was handed over to Numitor for punishment.