12Westropp, T.J. "Prehistoric Stone Forts of Central Clare. Moghane and Langough, near Dromoland." Journal of the Royal Society of Antiquaries of Ireland Fifth 3.3 (1893): 281. In this article Westropp tells of a tradition that Mooghaun Hillfort's "last chief sold it to Sir Donat O’Brien for threescrore cows and twenty bullocks." (p. 281)
A decade and a half later, Westropp wrote that a map from around 1590 called the "walled town" of Mooghaun Hillfort by the name "Cahermoghna." (Westropp, 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): 219.)