So: Valentine's Day was originally Lupercalia - the celebration of the wolf. -B.]
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http://en.wikipedia.org/wiki/Lupercalia
Lupercalia was a very ancient, possibly pre-Roman pastoral festival, observed on February 13 through February 15 to avert evil spirits and purify the city, releasing health and fertility. The Lupercalia was believed in antiquity to have some connection with the Ancient Greek festival of the Arcadian Lycaea (from Ancient Greek: ????? – lykos, "wolf", Latin lupus) and the worship of Lycaean Pan, the Greek equivalent to Faunus, as instituted by Evander.
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The festival began with the sacrifice by the Luperci (or the flamen dialis) of two male goats and a dog. Next two patrician young Luperci were led to the altar, to be anointed on their foreheads with the sacrificial blood, which was wiped off the bloody knife with wool soaked in milk, after which they were expected to smile and laugh; the smearing of the forehead with blood probably refers to human sacrifice originally practised at the festival.
The sacrificial feast followed, after which the Luperci cut thongs from the skins of the victims, which were called Februa, dressed themselves in the skins of the sacrificed goats, in imitation of Lupercus, and ran round the walls of the old Palatine city, the line of which was marked with stones, with the thongs in their hands in two bands, striking the people who crowded near. Girls and young women would line up on their route to receive lashes from these whips. This was supposed to ensure fertility, prevent sterility in women and ease the pains of childbirth. This tradition itself may survive (Christianised, and shifted to Spring) in certain ritual Easter Monday whippings.
The Lupercalia in the fifth century
By the fifth century, when the public performance of pagan rites had been outlawed, a nominally Christian Roman populace still clung to the Lupercalia in the time of Gelasius (494-96).
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