Ruined building in an excavated monastic grange, possibly domestic, near Abbey Steelworks, Margam. Documentary sources refer to a room with plastered walls having a painted border, mainly in black but with traces of red and another colour (blue or green -too badly altered for certainty).

Sources include:
RCAHMW Inventory Glamorgan III, part II, MG20. 2004.03.11/RCAHMW/SLE
Richard Suggett, Painted Temples: Wallpaintings and Rood-screens in Welsh Churches, 1200–1800, (RCAHMW 2021)

RCAHMW 2021