To preserve the Falaise family's association with Normandy the priory was donated as a cell to the Benedictine Abbey of St Mary at Lonlay.
[3] The church of Stogursey Priory was built around 1100 and incorporated a fine series of carved capitals showing affinity with Norman work of that date.
It became known as Blackabbey from the colour of the clothes worn by the monks, and to distinguish it from the Cistercian house of Grey Abbey nearby, on the shores of Strangford Lough.
In 1356 Richard FitzRalph, Archbishop of Armagh, made an agreement with Lonlay to purchase the lands, tithes and privileges, for which a deed of assignment was drawn up.
[8] FitzRalph entered into a bond to pay £200 by 1360, provided that the transfer should be confirmed by the Pope, the King and the founder patrons, or else the premises to be returned to Lonlay's possession.