Cormac mac Ciaran
Events which occurred during his lifetime included:
- 857 – A peace conference held at Rath Aedha Mic Bric, overseen by King Máel Sechnaill mac Máele Ruanaid.
- 859 – The battle of Druim Da Mhaighe; Máel Sechnaill defeats the Vikings of Dublin.
- 862 – Máel Sechnaill mac Máele Ruanaid dies on 27 November.
- 864 – Osraighe slaughters the Vikings, with Cinnedidh mac Gaithin, at Mindroichet.
- 870 – The plundering of the men of the Three Plains, and of the Comanns as far as Sliabh Bladhma by Vikings.
- 874 – Ruaidhri, son of Mormind, King of Britain, came to Ireland, to shun the Dubhghoill.
- 877 – The first year of Flann Sinna, the son of Maelsechlainn, in sovereignty over Ireland.
- 878 – The oratory of Cianan was plundered and destroyed by the foreigners.
- 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
- Revised edition of McCarthy's synchronisms at Trinity College Dublin.
- Byrne, Francis John (2001), Irish Kings and High-Kings, Dublin: Four Courts Press, ISBN 978-1-85182-196-9