The monastery of Clonmacnoise (Cluain Mhic Nóis in Irish, meaning “Meadow of the Sons of Nós”, or perhaps, albeit less likely, Cluain Muccu Nóis “Meadow of the Pigs of Nós”) is situated in County Offaly, Ireland on the River Shannon south of Athlone.
Clonmacnoise was founded in 546 by Ciarán, a young man from Rathcroghan, Co. Roscommon. Until the 9th century it had close associations with the kings of Connacht. The strategic location of the monastery helped it become a major centre of religion, learning, craftsmanship and trade by the 9th century and together with Clonard it was the most famous in Ireland, visited by scholars from all over Europe. From the ninth until the eleventh century it was allied with the kings of Meath. Many of the high kings of Tara and Connacht were buried here