5Westropp, T.J. "Types of the Ring-Forts and Similar Structures Remaining in Eastern Clare (The Newmarket Group)." Proceedings of the Royal Irish Academy. Section C: Archaeology, Celtic Studies, History, Linguistics, Literature 27 (1908-1909): 220.
The quoted phrase “barbaric silversmiths” is from John Windele, c. 1856. The date of the discovery may be deduced from: Armstrong, E.C.R. "The Great Clare Find of 1854." The Journal of the Royal Society of Antiquaries of Ireland Sixth 7.1 (1917): 21.