[The following article was taken from www.catholic.org/saints/]
Saint Valentine, officially known as Saint Valentine of Rome, is a third-century Roman saint widely celebrated on February 14 and commonly associated with “courtly love.”
Although not much of St. Valentine’s life is reliably known, and whether or not the stories involve two different saints by the same name is also not officially decided, it is highly agreed that St. Valentine was martyred and then buried on the Via Flaminia to the north of Rome.
In 1969, the Roman Catholic Church removed St. Valentine from the General Roman Calendar, because so little is known about him. However, the church still recognizes him as a saint, listing him in the February 14 spot of Roman Martyrology.
The legends attributed to the mysterious saint are as inconsistent as the actual identification of the man.
One common story about St. Valentine is that at one point of his life, as the former Bishop of Terni, Narnia and Amelia, he was on house arrest with Judge Asterius. While discussing religion and faith with the Judge, Valentine pledged the validity of Jesus. The judge immediately put Valentine and his faith to the test.
St. Valentine was presented with the judge’s blind daughter and told to restore her sight. If he succeeded, the judge vowed to do anything for Valentine. Placing his hands onto her eyes, Valentine restored the child’s vision.
Judge Asterius was humbled and obeyed Valentine’s requests. Asterius broke all the idols around his house, fasted for three days and became baptized, along with his family and entire 44 member household. The now faithful judge then freed all of his Christian inmates.
St. Valentine was later arrested again for continuing to try to convert people to Christianity. He was sent to Rome under the emperor Claudius Gothicus (Claudius II). According to the popular hagiographical identity, and what is believed to be the first representation of St. Valentine, the Nuremberg Chronicle, St. Valentine was a Roman priest martyred during Claudius’ reign. The story tells that St. Valentine was imprisoned for marrying Christian couples and aiding Christians being persecuted by Claudius in Rome. Both acts were considered serious crimes. A relationship between the saint and emperor began to grow, until Valentine attempted to convince Claudius of Christianity. Claudius became raged and sentenced Valentine to death, commanding him to renounce his faith or be beaten with clubs and beheaded.
St. Valentine refused to renounce his faith and Christianity and was executed outside the Flaminian Gate on February 14, 269. However, other tales of St. Valentine’s life claim he was executed either in the year 269, 270, 273 or 280. Other depictions of St. Valentine’s arrests tell that he secretly married couples so husbands wouldn’t have to go to war.
The Origin of Valentine’s Day
Another variation of the legend of St. Valentine says he refused to sacrifice to pagan gods, was imprisoned and while imprisoned he healed the jailer’s blind daughter. On the day of his execution, he left the girl a note signed, “Your Valentine.”
The romantic nature of Valentine’s Day may have derived during the Middle Ages, when it was believed that birds paired couples in mid-February. According to English 18th-century antiquarians Alban Butler and Francis Douce, Valentine’s Day was most likely created to overpower the pagan holiday, Lupercalia.
Whoever he was, Valentine did really exist, because archaeologists have unearthed a Roman catacomb and an ancient church dedicated to St. Valentine. In 496 AD Pope Gelasius marked February 14th as a celebration in honor of his martyrdom.