Saint Valentine (Latin: Valentinius), officially Saint Valentine of Rome, is a widely recognized third-century Roman saint commemorated on February 14 and associated since the High Middle Ages with a tradition of courtly love.All that is reliably known of the saint commemorated on July 23 is his name and that he was martyred and buried at a cemetery on the Via Flaminia close to the Milvian bridge to the north of Rome on that day. It is uncertain whether St.