Editing Castleknock (section)

===Gaelic period===
There is some documentary evidence in chapter 72 of the Life of St. Patrick by Jocelin of Furness to support the belief that when St. Patrick had finished his visit to the City of Dubh Linn he came to Castleknock to try to convert Murinus, the local ruler of the place. Despite his efforts Patrick was unsuccessful and departed while imparting a curse on the King.<ref>Life of St Patrick, by Jocelin of Furness, ed. by Ingrid Sperber and Ludwig Bieler, in Royal Irish Academy Archive of Celtic-Latin literature, ed. by Anthony Harvey and Angela Malthouse (2nd development and expanded edition, ACLL-2)</ref>

According to the Four Masters in the year 726 the death occurred of Congalach of Cnucha.<ref>{{Cite web|url=https://celt.ucc.ie//published/T100005B/index.html|title=Annals of the Four Masters|access-date=15 April 2020|archive-date=27 July 2020|archive-url=https://web.archive.org/web/20200727233552/https://celt.ucc.ie//published/T100005B/index.html|url-status=live}}</ref>

In 916 the Annals tells us that Niall Glindubh of the Northern Uí Neill became High King of Ireland and is referred to as "Niall of Cnucha" which signifies both the ascent of Cnucha (Castleknock) in prominence as well as the descent of Tara as a royal seat. In September 919, Niall gathered the Irish Chiefs and their armies at Castleknock from where they led a fight against the Danes who had regained their power over Dublin. The [[Battle of Islandbridge]], also known as the Battle of Áth Cliath, proved to be Niall's last battle. He was slain along with five other Irish Chiefs and their armies were subdued.<ref>Forte, Oram and Pedersen, p. 103; Annals of Ulster, s.a. 919</ref>