Feast of St. Valentine, February 14

From History.com:

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 may have become mingled with the Feast of Lupercalia, a pagan festival of love. On these occasions, the names of young women were placed in a box, from which they were drawn by the men as chance directed. In 496 AD, Pope Gelasius decided to put an end to the Feast of Lupercalia, and he declared that February 14 be celebrated as St Valentine's Day.