Fr Mildew has an intesting post on the relics of St Valentine, there are three St Valentines in the British Isles:
Cardinal Newman who brought the body of St Valentine back from Rome where he found it in a catacombe but had difficulties with customs. At Verona they wanted to open the box containing the relics and at the Custom House it was recorded as a "mummy". It appears they wanted to charge duty on it. It is now found in a shrine at the Birmingham Oratory. At least it is genuine.There are it seems two other "bodies" claiming the name of Valentine enshrined. One is in the Carmelite Church in Dublin sent as a gift from Pope Gregory 16th in 1835 while a trip to Glasgow and a visit to the Church of Blessed Duns Scotus you will discover Valentine No 3 this time the gift of a French family in 1868.