“ A fine silver seal of the abbey is preserved in the British Museum.
Founded and generously endowed in 1164 by Rhys ap Griffith, prince of South Wales, the Cistercian abbey of St Mary at Strata-Florida (which was probably a revival of an older monastic house on or near the same site) continued for over a century to be reckoned one of the wealthiest and most influential of the Welsh religious houses. It was much favoured by Welsh bards, nobles and princes, several of whom were buried in the adjoining cemetery ”