St. Valentine was born in 176 AD and died on the 14th of February in 273 AD. He is buried in Dublin, Ireland.
He is the patron saint of lovers, beekeepers, couples, against fainting, happy marriages, love plague, and epilepsy.
St. Valentine is most known for marrying young couples against Emporer Claudius II. The Emporer thought that men fought better when they were single and didn't allow their marriages. St. Valentine was a kind priest and married them in secret.
St. Valentine died a martyr. He was beheaded by Claudius because of his great works of marrying couples.
St. Valentine fell in love with the jailer's daughter and before his death he signed a letter to her saying "From your Valentine." This is where the phrase on most Valentine's Day cards comes from.