⁹"A Folklore Survey of County Clare: Rocks, Caves and Stones." Clare County Library. Web. 15 Dec. 2011. <http://www.clarelibrary.ie/eolas/coclare/folklore/folklore_survey/chapter18.htm>.
Some have suggested that the origin of the Diarmuid and Gráinne tale's connection to portal tombs may be the linguistic confusion arising from the word leabaidh, which was understood in its literal sense of a "bed," whereas it was intended to convey the sense of a "tomb."