According to Irish mythology, Dún Ailinne was one of the great royal sites of early Gaelic Ireland and was believed in the Early Medieval period to have been where the Kings of Leinster were inaugurated. These documents were written long after the site was in common use, however, and the site's relationship to Early Medieval kings remains unclear. It is similar to the other royal sites of Tara (Kings of Meath), Navan Fort (Kings of Ulster) and Rathcroghan (Kings of Connacht).