Saint Valentine.
Patron saint of engaged couples, bee keepers, plague and travellers.
Martyred by the Romans around 270, and buried north of Rome.
Nothing else is known. He was possibly even two different people martyred seventy years apart.
According to 13th century legend, he refused to deny Christ before the Roman Emperor and had his head cut off.
So, the romantic bit of this is?
(Thanks [Wikipedia](http://en.wikipedia.org/wiki/Saint_Valentine)).
(I like the idea – but really, why Valentine?)