St. Valentine was a Christian priest in 3rd Century Rome when it was illegal to be a follower of Christ. He was known for assisting persecuted Believers and presiding over Christian marriages. He was arrested and when he tried to convert the emperor he was sentenced to death. He was beaten with stones and beheaded. Well, that's according to legend. No one knows for sure. There's lots of different stories out there.
Anyway...
Happy Valentines Day!
