¹³Gray, William. "Discovery of an Ancient Sepulchre at the Giant's Ring, Belfast." The Journal of the Royal Society of Antiquaries of Ireland 5th 1.2 (1890): 164-65.
Monuments near the Giant's Ring were not only subjected to the depredations of agriculturalists. The Giant's Ring itself may have been deployed as the "bleach-green" for a linen factory. (MacDonald, Philip, and Barrie Hartwell. "Anne Plumptre and The Giant's Ring, County Down: An Account of a Possible Bleach-Green Watch-Tower." Ulster Journal of Archaeology, 3rd 68 (2009): 152-57.)