Whithorn Priory Museum

This is an early Christian site in Scotland that was used as such from the 5th or 6th century. There are graves that are dated to this period and archaeological findings suggest that a monastery complex may have been built in the late 6th century. It is certain that the monastery was built in the 8th to 9th centuries. Local tradition names Saint Ninian as the founder of the monastery and widely credited with bringing Christianity to the region. His shrine was a popular pilgrimage destination in the Middle Ages. Some people believe that this place is the cradle of Christianity.

The excellent museum underlines this
I learned here, that around 1100 the carvers working in Whithorn were producing carvings with less amition and skill. Designs became much simpler and were more crudely carved.