History of Clonmacnoise

site. Diarmuid was to be the first man to be crowned High King of Ireland while a practising Christian. Ciarán died less than one year later of the yellow fever (Justinian Plague) and was reportedly buried under the original wooden church, now the site of the 9th century stone oratory, Temple Ciarán. Annals record that he died at the age of 33, one of the many coincidences recorded between Ciarán's life and that of Jesus Christ.

Clonmacnoise's period of greatest growth came between the 8th and 12th centuries. It was attacked frequently during these four centuries, mostly by the Irish (at least 27 times), the Vikings (at least 7 times) and Anglo-Normans (at least 6 times). The early wooden buildings began to be replaced by more durable stone structures in the 9th century, and the original population of fewer than ten men grew to perhaps 1,500 to 2,000 by the 11th century. Artisans associated with the site created some of the most beautiful and enduring artworks in metal and stone ever seen in Ireland, with the Clonmacnoise Crozier (on display in the National Museum of Ireland) and the Cross of the Scriptures representing the apex of their efforts.

In the 12th century Clonmacnoise began to decline. The reasons were varied, but without doubt the most debilitating factor was the growth of the town of Athlone to the north