3"O'Donnell Coat of Arms and Family History." Araltis - the Internet Heraldry Store. Web. 06 June 2012. <http://www.araltas.com/features/odonnell/>.
See Wikipedia for a listing of the Kings of Tír Chonaill. The earliest printed account of the association between the Rock of Doon and inauguration ceremonies is found in the Post Chaise Companion of 1803. (FitzPatrick, Elizabeth. Royal Inauguration in Gaelic Ireland C. 1100-1600: A Cultural Landscape Study. Woodbridge, Suffolk, UK: Boydell, 2004. 185.)