William FitzOsbern and Adeliza de Tosny founded the abbey[1] in around the year 1060, and endowed it richly with lands in England, after the Norman Conquest.
[2] According to Ordericus Vitalis it was one of two religious foundations he established on his estates.
The abbey had fallen into disrepair by the fifteenth century.
[4] The buildings are now almost completely destroyed, apart from the former abbot's house, the precinct wall and a dovecote.
[4] A fragment of vaulting, possibly from a passageway in the cloister, survives in Chepstow Priory Church, displayed on the stump of its crossing tower.