6Harbison, Peter. "An Architectural Enigma." Irish Arts Review 23.3 (2006): 100-01.
The author states, "The various etymologies suggested for the word Staigue do not tell us anything about the fort's origins, though we do know that it was used as a cattleĀ·pound in the 18th century. Even local folklore enlightens us little, and all that John Windele was able to glean in 1848 was that the fort was once occupied by a stranger named Ruanoch, the 'Brown Shuler', who so tyrannised the natives that they rebelled and killed him. Was Staigue, then, a barracks, or the home of some affluent farmer or tourist/intruder some fifteen hundred years ago, or could it even have been built as a protective hostel for pilgrims on their way to and from Skellig Michael? Who knows? Like Chesterton's donkey, it keeps its secret still, and its very mystery will doubtless help to fuel speculation and discussion about it for many generations to come."
This speculation about Staigue continues with modern authors. In Secret Sights: Unknown Celtic Ireland, (2003) author Rob Vance writes, "It may have been used for ritual, as their god, Bolg (the god of lightning) was venerated during storms and the fort would have been a suitable amphitheatre for such observations..."