Maine Mor Ó Cellaigh
Maine Mor Ó Cellaigh (died 1271) was King of Uí Maine and 10th Chief of the Name. Uí Maine during his reign fell away from subordinate status to the Kings of Connacht and regained something of its former independence, but at the cost of encastellation and settlement under Richard Mór de Burgh (died 1242) and his son, Walter de Burgh, 1st Earl of Ulster (died 1271). There is only the most indirect references to Uí Maine in the annals, perhaps reflecting the kingdom's reduction into less significance or its domination by the de Burgh dynasty. References

 The Tribes and customs of Hy-Many, John O'Donovan, 1843
 The Surnames of Ireland, Edward MacLysaght, Dublin, 1978. The Anglo-Normans in Co. Galway: the process of colonization, Patrick Holland, Journal of the Galway Archaeological and Historical Society, vol. 41,(1987-88)
 Excavation on the line of the medieval town defences of Loughrea, Co. Galway, J.G.A.& H.S., vol. 41, (1987-88)
 Anglo-Norman Galway; rectangular earthworks and moated sites, Patrick Holland, J.G.A. & H.S., vol. 46 (1993)
  Rindown Castle: a royal fortress in Co. Roscommon, Sheelagh Harbison, J.G.A. & H.S., vol. 47 (1995)
 The Anglo-Norman landscape in County Galway; land-holdings, castles and settlements, Patrick Holland, J.G.A.& H.S., vol. 49 (1997)
 Annals of Ulster at CELT: Corpus of Electronic Texts at University College Cork
 Annals of Tigernach at CELT: Corpus of Electronic Texts at University College Cork
Revised edition of McCarthy's synchronisms at Trinity College Dublin. Nobility from County Galway
Nobility from County Roscommon
13th-century Irish monarchs
1271 deaths
Maine Mor
Year of birth unknown
Kings of Uí Maine