Uí Maine was the name of a kingdom situated in south Connacht, consisting of all of County Galway east of Athenry, all of southern and central County Roscommon.
Dearbhfhorghaill (1108–1193), anglicised as Derval, was a daughter of Murchad Ua Maeleachlainn, king of Meath, and of his wife Mor, daughter of Muirchertach Ua Briain. She is famously known as the "Helen of Ireland" as her abduction from her husband Tigernán Ua Ruairc by Diarmait Mac Murchada, king of Leinster, in 1152 played some part in bringing the Anglo-Normans to Irish shores, although this is a role that has often been greatly exaggerated and often misinterpreted.
Cinioch, named Cínaed mac Luchtren in the Irish Annals, was king of the Picts, in modern Scotland, from circa 616 to 631, when his death is reported in the Annals of Ulster, the Annals of Tigernach and the Chronicon Scotorum.
Fiachnae mac Demmáin was King of Ulaid from 626 to 627. He sometimes was called Fiachnae Dubtuinne. He was a member of the Dal Fiatach and nephew of Baetan mac Cairill of Ulaid. He was the son of Demmán mac Cairell. He succeeded his uncle as king of the Dal Fiatach in 581.
Coirpre Cromm mac Crimthainn was a King of Munster from the Eóganacht Glendamnach sept of the ruling Eoganachta dynasty. This branch was centered at Glanworth, County Cork. He was the son of Crimthann Srem mac Echado.
Muiredach Muillethan mac Fergusso was a King of Connacht from the Uí Briúin Aí branch of the Uí Briúin. He was the grandson of Rogallach mac Uatach, a previous king. His sobriquet Muillethan means "broad-crowned".
Cellach mac Rogallaig was a King of Connacht from the Uí Briúin Sil Cellaig branch of the Connachta. He was the son of Rogallach mac Uatach, a previous king. He succeeded his nephew Muiredach Muillethan mac Fergusso as king in 702.
Forggus mac Cellaig was a King of Connacht from the Uí Briúin branch of the Connachta. He was the son of Cellach mac Rogallaig, a previous king and brother of Domnall mac Cellaig. The sept of Uí Briúin he belonged to was the Síl Cellaig of Loch Cime named for his father. He reigned from 742 to 756.
Muirgius mac Tommaltaig was a King of Connacht from the Uí Briúin branch of the Connachta. He was the great-grandson of Indrechtach mac Muiredaig Muillethan, a previous king. The death of his father Tommaltach mac Murgail is recorded in the annals where he is called king of Mag nAi. Muirgius was of the Síl Muiredaig sept of the Uí Briúin. He reigned from 792 to 815.
Conchobar mac Taidg Mór was a King of Connacht from the Uí Briúin branch of the Connachta. He was the grandson of Muirgius mac Tommaltaig, a previous king. His father Tadg Mór had been slain fighting in Muirgius' wars versus the minor tribes of Connacht. He was of the Síl Muiredaig sept of the Uí Briúin. The Ó Conchobhair septs of Connacht are named for him.
Cairbre Crom, 11th King of Uí Maine, fl. c. 556.
Donnchadh mac Eamonn Ó Cellaigh, king of Uí Maine, Chief of the Name, fl. 1536 - after 1557.
Maelsechlainn Ó Cellaigh, king of Uí Maine, Chief of the Name, died in 1402.
Maelsechlainn mac Tadhg Ó Cellaigh, King of Uí Maine, Chief of the Name, was a leading participant in the Battle of Knockdoe, fl. 1499–1511.
Ivar of Waterford was the Norse king of Waterford from at least 969 until his death in the year 1000, and also reigned as King of Dublin, possibly from 989 to 993, and certainly again for less than a year between 994 and 995, returning after his expulsion from the city in 993 by Sigtrygg Silkbeard, who would expel him for good the next time.
Tigernach Ua Braín was abbot of Clonmacnoise and abbot of Roscommon. He was once held to be the author of the Annals of Tigernach, hence its name, but though this view is no longer sustainable, the nature and extent of his involvement remain unclear.
Domnall Ruadh Ó Máille, King of Umaill, died 11 November 1337.
Domhnall Ua Máille, Lord of Ui Mail and Chief of the Name, died 1176.
The Kings of Ui Fiachrach Muaidhe were the northern branch of Ui Fiachrach, based on the plain of the Muaidhe.
