In the fifteenth century, Goldcliff Priory was passed from the ownership of Bec Abbey to Tewkesbury Abbey and then on to Eton College. Over time, the martyrium lost its associations with Julius and Aaron and came to be associated solely with Alban. This chapel of St Alban remained in existence until the English Reformation. In 1495, its three procurators leased a Caerleon tenement to a man named John Matthews. By 1624, the area, known as Mount St Albans, was the seat of the Powell family. A lease document produced in 1728 lists the associated lands, which included ""Cae'r Fynwent"" ("The Field of the Graveyard") and ""Cae'r Scubor"" (The Field of the Barn"). The barn mentioned in this document may have been the former martyrium, for several lesser churches in Monmouthshire were converted into barns at this time.