Conaille Muirtheimne

Conaille Muirthemne was a Cruithin kingdom located in what is now south-east Ulster and north Leinster, Ireland, from before 688 to after 1107, approximately.

Conaille Muirtheimne had once formed part of the over-kingdom of the Ulaid, and it remained an ally of it for the greater part of its history. In Lebor na gCeart (the Book of Rights) the Conaille are listed among "The Territories whose King paid Tribute to the Ulaidh." In return, the king of Ulaid owed to "The Heroic King of Muirthemhne - six round goblets full of ale, ten ships from the Hero of Elga, ten steeds and ten brights cloaks."

They are believed to be a branch of the Cruthin. Dubhaltach MacFhirbhisigh stated of them: "To the Cruithne of Ireland belong the Dal Araidhe, the seven Laighsi of Leinster, the seven Soghain of Éire, and every Conaill of Eirinn." For much of its history it was at war with the Airgíalla and the Uí Néill; sometimes even with its Ulaidh allies.

The last recorded king of Conaille Muirthemhne died in 1081, yet in 1107 Fergus, son of the King of Conaille, was killed in battle by the Uí Breasil Macha", so it seems the kingdom still retained independence. However, the Airgíalla seem to have brought it under their control sometime after this, most probably c. 1130 by Donnchad Ua Cerbaill, king of Airgialla, and it was incorporated into his kingdom.

In 1153 when High King Domhnall Mac Lochlainn " ... plundered ... and burned Conaille."

Eoin MacNeill held the Conaille Muirtheimne to be kin of Ulaid and Érainn, descending from Conall Anglonnach, a son of Dedu mac Sin (MacNeill, pp. 97–8). Their association with the Cruthin appears to be the end result of a series of later inventions.

Possible surnames derived from this group include Connolly.

This description of Conaille Muirtheimne is taken from the article cited below:

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Wikipedia