When Valentine’s actions were discovered, Claudius ordered the priest be put to death. Valentine was arrested and dragged before the prefect of Rome, who condemned him to be beaten to death with clubs and to have his head cut off. The sentence was carried out on February 14, on or about the year 270.
Legend also has it that while in jail, St. Valentine left a farewell note for the jailer’s daughter, who had become his friend, and signed it “From Your Valentine.”
For his great service, Valentine was named a saint after his death.
In truth, the exact origins and identity of St. Valentine are unclear. According to the Catholic Encyclopedia, “At least three different Saint Valentines, all of them martyrs, are mentioned in the early martyrologies under the date of 14 February.” One was a priest in Rome, the second one was a bishop of Interamna (now Terni, Italy), and the third St. Valentine was a martyr in the Roman province of Africa.
Legends vary on how the martyr’s name became connected with romance. The date of his death might have become mingled with the Feast of Lupercalia, a pagan festival honoring the Roman fertility god Lupercus that involved random matchmaking. During the festival, men drew the name of a young women from a box, and the pair became a couple, sometimes for the long-term. In A.D. 496, Pope Gelasius decided to put an end to Lupercalia, and he declared that February 14 be celebrated as St. Valentine’s Day.
Gradually, February 14 became a date for exchanging love messages, poems and simple gifts such as flowers.