Mathghamhain mac Cian was an

Eóganacht Raithlind Eóganacht Raithlind or Uí Echach Muman are a branch of the Eóganachta, the ruling dynasty of Munster in southwest Ireland during the 5th-10th centuries. They took their name from Raithlinn or Raithleann described around the area of Bandon, i ...

nobleman and maternal grandson of

Brian Boru Brian Boru ( mga, Brian Bóruma mac Cennétig; modern ga, Brian Bóramha; 23 April 1014) was an Irish king who ended the domination of the High Kingship of Ireland by the Uí Néill and probably ended Viking invasion/domination of Ireland. Br ...

. He was the son of

Cian mac Máelmuaid Cían mac Máelmuaid was a son of Máel Muad mac Brain, who was twice King of Munster. Cían's father had been killed by Brian Boru at the Battle of Belach Lechta. He was a member of Uí Echach Muman or Eóganacht Raithlind. Cían became a close ...

and his wife Sadhbh, who was a daughter of the High King

. He died at the

Battle of Clontarf The Battle of Clontarf ( ga, Cath Chluain Tarbh) took place on 23 April 1014 at Clontarf, near Dublin, on the east coast of Ireland. It pitted an army led by Brian Boru, High King of Ireland, against a Norse-Irish alliance comprising the for ...

in 1014 fighting for the High King. Mathghamhain's descendants eventually became sovereigns over territory in west

Cork Cork or CORK may refer to: Materials * Cork (material), an impermeable buoyant plant product ** Cork (plug), a cylindrical or conical object used to seal a container ***Wine cork Places Ireland * Cork (city) ** Metropolitan Cork, also known as G ...

, notably around the

Iveragh Peninsula The Iveragh Peninsula () is located in County Kerry in Ireland. It is the largest peninsula in southwestern Ireland. A mountain range, the MacGillycuddy's Reeks, lies in the centre of the peninsula. Carrauntoohil, its highest mountain, is als ...

and the town of Bandon. Today, his descendants use the surname

O'Mahony O'Mahony (Old Irish: ''Ó Mathghamhna''; Modern Irish: ''Ó Mathúna'') is the original name of the clan, with breakaway clans also spelled O'Mahoney, or simply Mahony, Mahaney and Mahoney, without the prefix. Brodceann O'Mahony was the eldest of ...

, O'Mahoney,

Mahoney Mahoney is a surname originally designating the descendants of Mathghamhain. In the early 16th century, during the collapse of the O'Mahony's, three new breakaway dynastic families formed: MacMahon, Mahon and Mahoney (the latter bearing an earldom ...

Mahony Mahony may refer to : * Bertha Mahony (1882–1969), children’s literature publisher * Chris Mahony (born 1981) New Zealand rugby union player *Dennis Mahony (1821–1879), Irish-American journalist and politician * Eoghan Mahony, American televi ...

, Maughon or Mahaney

References

1014 deaths Military personnel killed in action Year of birth unknown {{Ireland-bio-stub