Who used to observe the Sarum Rite?

Question

It is generally believed that which Ancient Roman festival, an archaic rite connected to fertility observed from 13 to 15 February, was converted by the Roman Catholic Church to honour the Virgin Mary which in turn became St Valentine's day?

Answer 1

Mediaeval Christians in parts of Europe
The Rite is the Latin liturgical rite developed at Salisbury Cathedral in England and used from the late eleventh century throughout the British Isles and parts of northwestern Europe in Christian worship until the English Reformation. It was developed under William the Conqueror, whose new bishop of Salisbury replaced previous forms with the new Rite drawing on the existing Celtic-Anglo-Saxon rite, the local adaptations of the Roman rite, and both Norman and Anglo-Saxon traditions .