related to the Uí Néill. Clan Donald Claims to be traced back to through a long line of ancestors back to the High Kings of Ireland, namely Colla Uais and Conn of the Hundred Battles to Cairbre Lifechair a commons ancestor of the Uí Néill and the Connachta Clan Ewen of Otter claim descent from the Ui Neill. Clan Gregor claim descent from Siol Alpin. Clan Irvine claim descent from the O'Neill Clan Maccallum claim descent from the Ui Neill. Clan MacLean intermarried with the Ui Neill. Clan Macquarrie claim descent from Siol Alpin Clan Macqueen alleged to be of same descent as Clan Donald. Clan MacSweeney-as noted above claim descent from Uí Néill. Clan Munro claim descent from the O'Neill Clan Oliphant intermarried with the Bruce Clan Clann Ruaidhrí Claim descent from the O'Neill Ó Brádaigh-sept of the O'Brian clan. De Burgh/Burke-married into the O'Brian Clan O'Carroll clan -related to the Ui Neill. O'Cahan - claim descent from the Uí Néill. Clan Ó Ceallaigh-related to the Uí Néill. Clann Cholmáin/O'Melaghlin-MacLaughlin Clan claim descent from the Southern Uí Néill. Ó Cléirigh Clan intermarried with the O'Nell Ó Coileáin related to the Uí Néill. Ó Conchubhair claim descent from the Connachta's Uí Briúin. Ó Conghalaigh intermarried with the Uí Néill. O'Connell Clan intermarried with the O'Brians. Ó Dálaigh Clan claim descent from a son of Niall of the Nine Hostages. Dempsey Clan intermarried with the O'Nell O'Devlin clan claim descent from Uí Néill. O'Doherty clan claim descent from Uí Néill. O'Donnell dynasty Clan claim descent from Uí Néill. Donnellan clan related to the Uí Néill O'Donnelly Clan claim descent from Uí Néill. O'Donovan Clan (Descended from the House of Ivar) intermarried with O'Brian clan Ó Fionnagáin Finnegan Clan claim descent from father of Niall of the Nine Hostages. FitzGeralds intermarried with the Uí Néill. O'Gallagher Clan claim descent from Uí Néill. Gavigan Clan claim descent from the Southern Uí Néill. O'Gorman Clan intermarried with the Uí Néill. O'Grady Clan are distant relations of the O'Brian Clan. O'Higgins family claim descent from the Southern Uí Néill. Ó Flaithbheartaigh Clan claim descent from the Connachta's Uí Briúin. Kavanagh Clan claim descent from the Connachta's Uí Briúin. O'Kelly Clan related to the Uí Néill Mac Brádaigh Clan. They claim descent from High King of Ireland Eochaid Mugmedon. McCarthy Clan intermarried with the O'Brian Clan. Magennis Clan intermarried with the O'Neill Clan Maguire Clan related