Llantwit Major - St Illtyd

St Illtyd's Church is a church complex on the site of the oldest college in the United Kingdom. Today it is generally believed to have been founded around 508 AD by St Illtud. The present church building was constructed by the Normans in the 11th century, with parts rebuilt in the 13th and 15th centuries.

The college is said to have been attacked by the Danes in 987. In the 11th century, the area was conquered by the Norman nobleman Robert Fitzhamon. During the conquest, the wooden college and church were destroyed and the foundations transferred to the newly founded Tewkesbury Abbey, Fitzhamon's personal project. The Normans eventually rebuilt a parish church on the ruins of the old college around 1100, but the college greatly diminished in size and importance.

In the 13th century, a low tower was added at the east end and a second chapel was built next to the first. The old west chapel continued to be used as a parish church, but the new east chapel was used by the monastic community. Around 1400, side aisles were added to the eastern monastery church and the roof and tower were raised to their current height. In the 16th century, during the dissolution of the monasteries, the monastic community was dissolved and the east chapel was taken over as a parish church. During the dissolution and the later Puritan period, the interior of the church fell into disrepair and many of the murals and statues were destroyed.