If you are asking about St. Valentine whose feast day we celebrate on February 14, he was a priest, possibly a bishop, in Rome. He followed a life of heroic virtue. When the Roman Emperor ordered that he would not allow marriages to be performed, Valentine continued to marry people in secret. The emperor was having problems raising an army as he could not draft married men. When the emperor learned that Valentine was continuing to marry couples, he had him arrested and thrown in prison. After torture, Valentine has martyred for his faith. This is why Valentine is considered the patron saint of love. Martyrdom for one's faith is generally considered a first class ticket to Heaven. Valentine would have been proclaimed a saint by popular acclaim as there was no official process in place for canonization.
St. Valentine did not create the valentine. That is a relatively modern invention by somebody wishing to cash in on the saint's good name.
February 14 is the feast day of Saint Valentine of Rome.
Saint Valentine of Rome is the patron saint of lovers.
Valentines day was named after Saint Valentine.
Saint valentine
Saint Valentine was a priest in Rome.
Saint Valentine of Rome
The feast day of Saint Valentine of Rome is on February 14. He is considered the patron saint of lovers.
Saint Valentine
Valentine's Day, February 14, is the feast of St. Valentine, the patron saint of lovers.
You have it backwards. Valentine's Day is named after Saint Valentine of Rome and February 14 is his feast day.
Saint Valentine of Rome was probably not married.