t. David's Cathedral in Pembrokeshire southwest Wales. (Photograph taken by Mike Wilding). St. David is the patron saint of Wales and according to legend founded a monastic order in the area some time after 500 A.D. The town now bears his name, and the Cathedral dates from around 1176, its construction and building amendments covering three centuries. Under the Norman bishop, Peter de Leia the nave, west front and tower were constructed around 1180 to 1198, but the tower collapsed in the thirteenth century and more work was required in repairing the damage. Areas behind the altar and the Lady chapel were worked on at the end of the thirteenth century. Several important people are buried here, including Edward Tudor, father of King Henry VII.