 The abbey was ravaged by the Welsh uprisings of the 13th century.During the Dissolution of the Monasteries by King Henry VIII of England the last abbot, Lleision ap Thomas, managed to buy time through payment of a large fine in 1536, but the abbey was dissolved in 1539.At this time, the abbey was turned into a large estate, initially granted to Richard Williams, although by 1600 it was owned by Sir John Herbert, and had a substantial Tudor mansion occupying a part of the cloisters.