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Telltown (Irish: Tailtin) is an outdated place name in County Meath, Ireland, for the area between Navan and Kells. It was named for the Irish mythological figure or goddess, Tailtiu. The Taillten Fair was held there in medieval times as a revival of the ancient Aonach Tailteann, and was revived as the Taillteann Games for a period in the twentieth century.
Mound structures near Telltown have been asserted in legends in the Book of Invasions to be ancient man-made earthworks 2500 years old, modern archaeological reports of the area suggest they date to at least the Iron Age. Part of one of the mounds in the area called the Knockauns was partially destroyed by bulldozers for urbanization in 1997. 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.
- AI875.1 Kl. Muiredach son of Bran, king of Laigin, harried UíNéill as far as Sliab Fuait, and the Fair of Tailltiu was held.
- Logainm . Place Names Commission. Retrieved 13 March 2010.
- Lebor Gabála Érenn, original text edited and translated by R A Stewart Macalister, D. Litt, Part IV: Irish Texts Society, Volume 41, pp. 59, 115, 117, 149, 177, 179, London 1941. ISBN 1-870166-41-8.
- Malcolm, Nigel., & Quinn, Billy., Telltown Impact Assessment Report for Moore Archaeological and Environmental Services Limited, 2009.