Valentine is related to Cupid, Eros, Juno Februata, Pan, Priapus, etc.
Valentine's Day is linked to the ancient Roman Lupercalia feast.
The ancient Christian Church had a policy of replacing Pagan gods and goddesses
with Christian saints. Sometimes these saints actually existed. In other cases,
the story of a Roman god or goddess was cleaned up and Christianized. Some of
Pagan elements were minimized or entirely deleted. A biography was created so that they would
appear to have been real human beings. St. Valentine appears to have been
one of these.