6th century in Ireland

=500s=

;506
* 23 March - Death of St. Mac Caírthinn, Bishop of Clogher."A New History of Ireland VIII: A Chronology of Irish History to 1976 - A Companion to Irish History Part I," edited by T.W. Moody, F.X. Martin and F.J. Byrne, 1982. ISBN 0-19-821744-7] [http://celt.ucc.ie/publishd.html List of Published Texts at CELT] — University College Cork's "Corpus of Electronic Texts" project has the full list of Irish Annals.]

;507
* Death of Lugaid mac Lóegairi, High King of Ireland, son of Lóegair mac Neill, grandson of Niall Noigiallach (Niall of the Nine Hostages).
* 3 September - Death of St. Mac Nisi, Bishop of Connor, (according to some sources, see 509 below).

;509
*3 September - Death of St. Mac Nisi, Bishop of Connor, (according to some sources; see 507 above).

510s

;512
* June 29 - a solar eclipse was recorded.
* 2 November - Death of St. Erc, Bishop of Slane, in this year according to some, - see 513.

;513
* Death of St. Erc, Bishop of Slane, in this year according to some, on 2 November

;515
*Cainnech of Aghaboe was born, (possibly in 516), at Glengiven near Dungiven in Ulster.

;516
* Battle of Druim Derge in what is now Co. Westmeath or Co. Offaly; Laigin finally lose the Irish midlands to the Uí Néill.
*Cainnech of Aghaboe was born, (possibly in 515), at Glengiven near Dungiven in Ulster.
*Birth of Saint Ciarán of Clonmacnoise; became an early Irish bishop. He is sometimes called "Ciarán the Younger" to distinguish him from Saint Ciarán Saighir. He was one of the Twelve Apostles of Ireland.Citation
last = Gratton-Flood
first = W.H.
title = The Twelve Apostles of Erin
work = The Catholic Encyclopedia
volume = I
location = New York
publisher = Robert Appleton Company
date = March 1, 1907
year = 1907
url = http://www.newadvent.org/cathen/01632a.htm
accessdate = 2008-02-09]

;517
* Death of St. Moninne (Darercae) of Killeevy on 6 July.

520s

;520

* Monastery founded by Saint Faithleach in Ballyleague. He was the brother of Saint Brendan the Navigator. [ [http://www.esatclear.ie/~annals Annals] ]
* Clonard Abbey in modern County Meath founded by St. Finnian of Clonard
*3 May - Death of St. Conláed, Bishop of Kildare, (in 516 according to some sources).

;521
*7 December - Birth of Columba (Colm Cille or Columcille), missionary monk (died 597).
*7 December - Death of St. Búite of Monasterboice

;522
* Crimthann Srem mac Echado succeeded his father (Eochaid mac Óengusa) as king of Munster.
* Death of Eochaid mac Óengusa, ["Annals of Tigernach(AT)"] an Eoganachta king of Munster.

;524
* Death of St. Brigit of Kildare on 1 February (526 according to other sources).

;525
* 1 February - Death of St. Brigid of Kildare on (526 according to other sources).

;526
* Death of St. Brigit of Kildare on 1 February (524 according to other sources).

;527
* Death of St. Ailbe of Emly on either 12 September or 30 December; year also given as 528, 534 or 542.
* Death of Illan mac Dúnlainge, King of Leinster

;528
* Death of St. Ailbe of Emly on either 12 September or 30 December; year also given as 527, 534 or 542.

530s

;530
*Saint Brendan completes building of monastic cells at Ardfert
*A monastic settlement is established on Lambay Island
*A monastic settlement is established at Clonmore, County Carlow
*Birth of Saint Dallan Forgaill, the Chief Bard of Ireland, at Magh Slécht.
*Birth of Saint Moluag
*Death of Saint Enda of Aran

;534
* Death of St. Ailbe of Emly on either 12 September or 30 December; year also given as 527, 528 or 542.

;535
* Death of St. Mochta of Louth, disciple of St. Patrick, on 20 August.

;536
* Famine recorded in Ireland.

;537
* A plague strikes Britain and Ireland.

540s

;540
* Around this year, the Paschal controversy begins in Ireland.

;542
* Death of St. Ailbe of Emly on either 12 September or 30 December; year also given as 527, 528 or 534.

;545
*Monastery founded at Clonmacnoise "Illustrated Dictionary of Irish History." Mac Annaidh, S (ed). Gill and Macmillan, Dublin. 2001] by Saint Ciarán.

;546
* Columcille founds Derry.

;549
*Roman Catholic Diocese of Ossory, which still exists, founded in Ireland.
*Death of St. Finnian of Clonard, who founded Clonard Abbey.

550s

;550
*St. Mogue (also known as Saint Aidan of Ferns) born at Magh Slécht.

;552
*Death of St. Finnian of Clonard, who founded Clonard Abbey.

;556
*Death of Saint Ciarán of Clonmacnoise

;557
* Death of Colmán Már mac Diarmato, a king of UisnechDate per "The Chronology of the Irish Annals", Daniel P. McCarthy] in Mide of the Clann Cholmáin.

560s

;563
*Saint Columba founded a monastery on Iona ["The Concise History of Ireland." Duffy, S. Gill & Macmillan, Dublin. 2005] .
*Saint Brendan founded monastery at Clonfert

570s

;570
*Death of Saint Molaise

;573
*Death of Brendan of Birr, cite web | last = Jones | first = Terry | title = Brendan of Birr | work = Patron Saints Index | url=http://catholicforum.com/saints/saintb57.htm | accessdate = 2007-12-30] one of the early Irish monastic saints and one of the Twelve Apostles of Ireland. [ [http://www.newadvent.org/cathen/01632a.htm The Twelve Apostles of Erin] ]

;575
*Convention of Druim Ceat, at which agreement was reached between the Uí Néill and the king of Dál Riata maintaining the peace and the balance of power. At the Convention of Druim Cett, the poets were said to have been saved from banishment by the intervention of Colum Cille. [cite book | last=Moody, TW & Martin, FX (eds)| year=1967 |title=The Course of Irish History | publisher=The Mercier Press | location=Cork, Ireland | pages=p 60]
*Saint Murtagh met with St. Columba in Ballysadare.

;576
* Death of Colmán Már mac Coirpre, a King of Leinster

;577
* Fergus Scandal mac Crimthainn becomes king of Munster.
*Death of Saint Brendan
*Death of Coirpre Cromm mac Crimthainn a king of Munster from the Glendamnach sept of the Eoganachta.

580s

;584
* The foundation of the University of Tuaim Drecain (Tomregan) by the Synod of Drumceat at Magh Slécht

;585
*Suibne mac Colmáin Már (died 598) becomes King of Uisnech in Mide of the Clann Cholmáin. He was the son of Colmán Már mac Diarmato (died 557), also king of Uisnech. [Francis J.Byrne, "Irish Kings and High-Kings", Table 3] He ruled Uisnech until his death in 598. [the "Laud Synchronisms" and "Book of Leinster" give him a reign of 18 years]

590s

;593
* Death of Áed Dibchine mac Senaig a King of Leinster from the Uí Máil branch of the Laigin. He is the first king of this branch to hold the overlordship of Leinster. [Francis J.Byrne, "Irish Kings and High-Kings", Table 8]

;597
*9 June - Death of Columba (Colm Cille or Columcille), missionary monk (b.521).

;598
*Monastery established in Ferns, County Wexford, dedicated to St Mogue, Bishop of Ferns. ["Blue Guide, Ireland." Brian Lalor. (p248) ISBN 0-7136-6130-5] .
* Suibne mac Colmáin Már, a King of Uisnech in Mide of the Clann Cholmáin was killed by his uncle.

;599 or 600
*Death of Cainnech of Aghaboe at Aghaboe. [Harvnb|Ulster.Harvnb|O'Donovan|1842.] His feast day is commemorated on 11 October in the Roman Catholic Church [ [http://www.catholic.org/saints/saint.php?saint_id=171 Catholic Online] ] and on the 1 August or 14 August in the Eastern Orthodox Church.

600s

;600
*Death of Uatu mac Áedo a king of Connacht from the Uí Briúin branch of the Connachta. [Francis J.Byrne, "Irish Kings and High-Kings", Table 19.]

References