List of kings of Connacht

The Kings of Connacht were rulers of the cóiced of Connacht, which lies west of the River Shannon, Ireland. However, the name only became applied to it in the early medieval era, being named after the Connachta.
The old name for the province was Cóiced Ol nEchmacht. Ptolemy's map of c. 150 AD does in fact list a people called the Nagnatae as living in the west of Ireland. Some are of the opinion that Ptolemy's Map of Ireland may be based on cartography carried out as much as five hundred years before his time.
The Connachta were a group of dynasties who claimed descent from the three eldest sons of Eochaid Mugmedon: Brion, Ailill and Fiachrae. They took their collective name from their alleged descent from Conn Cétchathach. Their younger brother, Niall Noigiallach was ancestor to the Uí Néill.
The following is a list of kings of Connacht from the fifth to fifteenth centuries.

Prehistoric kings of Ol nEchmacht

Name	Reign	Clan Arms	Parentage	Death
Dauí Tenga Uma	482–500		Son of Brión mac Echach Muigmedóin	500

Name	Reign	Clan Arms	Parentage	Death
Colmán mac Cobthaig	600–622		Son of Cobthach mac Gabran	622

Name	Reign	Clan Arms	Parentage	Death
Cenn Fáelad mac Colgan	663–682		Son of Colga mac Aodha	682

Name	Reign	Clan Arms	Parentage	Death
Dúnchad Muirisci	682–683		Son of Tipraite mac Máel Dubh	683

Name	Reign	Clan Arms	Parentage	Death
Muiredach Muillethan	696–702		Son of Fergus mac Rogallaig	702

Name	Reign	Clan Arms	Parentage	Death
Cathal mac Muiredaig	728–735		Son of Muiredach Muillethan	735

Name	Reign	Clan Arms	Parentage	Death
Fergal Ua Ruairc	956–967		Son of Art mac Ruarc	967

Name	Reign	Clan Arms	Parentage	Death
Conchobar mac Tadg	967–973		Son of Tadg mac Cathail	973
Cathal mac Tadg	973		Son of Tadg mac Cathail	973
Cathal mac Conchobar mac Taidg	973–1010		Son of Conchobar mac Tadg	1010
Tadg in Eich Gil	1010–1030		Son of Cathal mac Conchobar mac Taidg	1030

Name	Reign	Clan Arms	Parentage	Death
Cathal Ó Conchobair	1280–1288; 1293		Son of Conchobair Ruadh mac Muirchertaig Ó Conchobair	1293
Maghnus Ó Conchobair	1288–1293		Son of Conchobair Ruadh mac Muirchertaig Ó Conchobair	1293

Name	Reign	Clan Arms	Parentage	Death
Toirdelbach Ó Conchobair	1317–1318 1324–1350		Son of Aedh Ó Conchobair	1350
Aedh mac Tairdelbach Ó Conchobair	1324		Son of Toirdelbach Ó Conchobair	1345

Name	Reign	Clan Arms	Parentage	Death
Cathal mac Domhnall Ó Conchobair	1318–1324		Son of Domnall mac Tadg Ó Conchobair	1324