Flaithbertach mac Loingsig
Flaithbertach mac Loingsig (died 765) was a High King of Ireland. He was a member of the Cenél Conaill, a branch of the northern Uí Néill. He was the son of Loingsech mac Óengusso (died 703), a previous high king. He ruled from 728 to 734.
He is considered to have been High King of Ireland following his victory over the previous High King, Cináed mac Írgalaig of the Síl nÁedo Sláine, at the battle of Druim Corcain in 728 where Cináed was killed.
For much of Flaithbertach's reign his kingship was contested by his northern Uí Néill rival, Áed Allán of the Cenél nEógain. Áed's goal was the conquest of Mag nÍtha, a plain in the valley of the River Finn connecting northern and southern portions of Cenél Conaill territory. Prior to becoming high king he fought the Battle of Druim Fornocht with his rival in 727. In 732 Flaithbertach was defeated by Áed in battle in which Flaithbertach's cousin Flann Gohan mac Congaile was slain. Another encounter occurred in 733 in a battle fought in Mag nÍtha in which another cousin of Flaithbertach, Conaing mac Congaile was slain. This was followed by a further encounter in 734 in Mag nÍtha.
These defeats led Flaithbertach to call in the naval help of the men of Dál Riata but their fleet was destroyed at the mouth of the Bann in 734. The less reliable Annals of the Four Masters state that the Scots did arrive to help Flaithbertach's army cut off the enemy and that the Ulaid and the Cianachta Glenn Geimin were allies of Áed in this battle.
Flaithbertach was the last member of the Cenél Conaill to be generally counted as High King of Ireland, although Ruaidrí ua Canannáin (d. 950) is considered such by a minority of sources. Flaithbertach's sons included: Áed Muinderg (died 747) called King of the North; Loingsech mac Flaithbertaig (died 754) and Murchad mac Flaithbertaig (died 767) called chiefs of the Cenél Conaill. His daughter Dunlaith ingen Flaithbertaig (died 798) married the high king Niall Frossach (died 778).
- Francis J.Byrne, Irish Kings and High-Kings, Table 4
- the Laud Synchronisms and Rawlinson Genealogies give him a reign of 9 years; Book of Leinster gives him 7 years
- Annals of Ulster AU 728.1; Annals of Tigernach AT 728.1, 728.8
- T.M. Charles-Edwards, Early Christian Ireland, pg.573
- Annals of Ulster AU 727.2; Annals of Tigernach AT 727.2
- Annals of Ulster AU 732.10
- Annals of Ulster AU 733.3
- Annals of Ulster AU 734.8
- Byrne, pg.114
- Annals of the Four Masters M 728.3
- Charles-Edwards, pg.573; Annals of Ulster, AU 734.10, 765.2
- Geoffrey Keating, History of Ireland, Book II, pg.153
- Annals of Ulster at CELT: Corpus of Electronic Texts at University College Cork
- Annals of Tigernach at CELT: Corpus of Electronic Texts at University College Cork
- Annals of the Four Masters at CELT: Corpus of Electronic Texts at University College Cork
- Byrne, Francis John (2001), Irish Kings and High-Kings, Dublin: Four Courts Press, ISBN 978-1-85182-196-9
- Charles-Edwards, T. M. (2000), Early Christian Ireland, Cambridge: Cambridge University Press, ISBN 0-521-36395-0
- Geoffrey Keating, History of Ireland at CELT: Corpus of Electronic Texts at University College Cork
- CELT: Corpus of Electronic Texts at University College Cork. The Corpus of Electronic Texts includes the Annals of Ulster and the Four Masters, the Chronicon Scotorum and the Book of Leinster as well as Genealogies, and various Saints' Lives. Most are translated into English, or translations are in progress
Cináed mac Írgalaig
| High King of Ireland