Glúniairn

Glúniairn (died 989), in Old Norse Járnkné, was a Norse-Gael king of Dublin of the Uí Ímair kindred which ruled over much of the Scandinavianised and Norse-Gael parts of Great Britain and Ireland in the tenth century.

Glúniairn was a son of Amlaíb Cuarán (d. after 980) who abdicated as king of Dublin following his defeat at the Battle of Tara in 980 and the subsequent capture of Dublin by Máel Sechnaill mac Domnaill of Clann Cholmáin, the High King of Ireland. Olaf retired to Iona where he probably became a monk and later died. Glúniairn and Máel Sechnaill were both sons of Dúnlaith, sister of the previous High King, Domnall ua Néill of Cenél nEógain, and Máel Sechnaill appointed his half-brother to rule in Dublin as his client. Máel Sechnaill removed many of the hostages and captives that Amlaíb Cuarán had held in Dublin, including Domnall Clóen, King of Leinster.

It is likely that Glúniairn benefited substantially from the support of his half-brother, and this support extended beyond that which placed him in power in Dublin in 980 over the claims of his many half-brothers. Domnall Clóen, together with Glúniairn's distant kinsman Ivar of Waterford, faced Máel Sechnaill and Glúniairn in battle in 983, and defeated their enemies, Ivar's son Gilla Pátraic being one of the many dead in this rout. Máel Sechnaill's army ravaged across Leinster while Glúniairn's men attacked the church at Glendalough.

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