Valentine’s Day, also called St. Valentine’s Day, holiday (February 14) when lovers express their affection with greetings and gifts. Given their similarities, it has been suggested that the holiday has origins in the Roman festival of Lupercalia, held in mid-February. The festival, which celebrated the coming of spring, included fertility rites and the pairing off of women with men by lottery. At the end of the 5th century, Pope Gelasius I forbid the celebration of Lupercalia and is sometimes attributed with replacing it with St. Valentine’s Day, but the true origin of the holiday is vague at best. Valentine’s Day did not come to be celebrated as a day of romance until about the 14th century. Although there were several Christian martyrs named Valentine, the day may have taken its name from a priest who was martyred about 270 CE by the emperor Claudius II Gothicus. According to legend, the priest signed a letter “from your Valentine” to his jailer’s daughter, whom he had befrien...