 John O'Donovan claimed that loughs near a fort in the area called the Rath Dhubh "have the appearance of being artificial lakes and may have been used when the Olympic Games of Tailteann were celebrated by the Irish".He also mentions a tradition that the shade of Laogaire, the King of Tara, was imprisoned by Saint Patrick until Judgement Day to the east of Rath Dhubh in the Dubhloch.The Annals of Inisfallen states that "Muiredach son of Bran, king of Laigin, harried UíNéill as far as Sliab Fuait, and the Fair of Tailtiu was held."