O'Neill dynasty

*Viscount O'Neill *Viscount of Santa Mónica *Marquis de la Granja *Baron Dungannon *Baron O'Neill of Shane's Castle *Baron Rathcavan *Baroness O'Neill of Bengarve *Baron O'Neill of Clackmannan *Baron O'Neill of Gatley *O'Neill baronets |founder =Flaithbertach Ua Néill |final ruler = Hugh O'Neill, Earl of Tyrone |current head = By sept Chief |heir apparent = |founding year =Late 10th century |dissolution = |nationality = |cadet branches = }}

The '''O'Neill dynasty''' (Irish: ''Ó Néill'') are a lineage of Irish Gaelic origin that held prominent positions and titles in Ireland and elsewhere. As kings of Cenél nEógain, they were historically one of the most prominent family of the Northern Uí Néill, along with the O'Donnell dynasty. Some O'Neills state that their ancestors were kings of Ailech during the Early Middle Ages, as descendants of Niall of the Nine Hostages.

Two of their progenitors were High Kings of Ireland: Niall Glúndub (from whom they take their name) and Domnall ua Néill. From 1232 until 1616, the O'Neills were sovereign kings of Tír Eógain, holding territories in the north of Ireland in the province of Ulster, particularly around modern County Tyrone, County Londonderry and County Antrim, in what is now Northern Ireland. After their territory was merged with the Kingdom of Ireland and the land was caught up in the Plantation of Ulster, they were involved in a number of events, such as Tyrone's Rebellion, the Flight of the Earls, the Irish Rebellion of 1641 and the Irish Confederate Wars. Provided by Wikipedia