1 April 1129: The death of Cellach mac Aeda on this day. This famed and holy man was the Bishop of Armagh. His status as head of the Irish Church had been recognised at the Synod of Rathbressail in the year 1111. He was born in the year 1080 and was an advocate of reform in the Irish Church to put it on a more formal and set lines that matched similar moves on the Continent.
While on a visit to Munster (Mumu) he took ill and died at the religious settlement of Ard Patrick near Limerick, possibly at the monastic settlement there whose ruins are still just about visible. He was buried at his own request at Lismore. Shortly before he died he designated the future Saint Malachy as his successor. However his protégé was to be frustrated in his attempts to secure the see of Armagh by Muirchertach mac Domnall who installed himself at Armagh before Malachy could get there. The situation was only resolved in 1134 after much political and ecclesiastical power politics had been played out.
Annals of Ulster