Chennselaig-Ímair Dynastic Feud

## Participants

### Belligerents

⠀Dubhlinn (989, 993-994 995-1036, 1038-1046, After 1052)LaiganBreagha (1006, After 1052)Alba (1054-1057)- Bernicia (After 1054)Innse Gall (After 1061)

### Supporters

⠀Celtic Alliance (After 1065)- Alba (After 1057)- Deheubarth- Fife

### Commanders

⠀Sigtrygg Ó Ímair †Donnchad Mael Ó Chennselaig †Domnall Ó Chennselaig †Ímar Ó Ímair †Diarmait I Ó ChennselaigGlúniairn Ó ChennselaigGuðfriðr Ó ChennselaigMael Morda Ó ChennselaigMurchad Ó ChennselaigÆgir Mæra

## Participants

### Belligerents

⠀Breagha (1006-1052)Dubhlinn (989-993, 994-995, 1036-1038, 1046-1052)Galloway (After 1054)Innse Gall (1046-1061)Waterford

### Supporters

⠀MhumhainNorthumbria (Ængland) (1054)Strathclyde (Alba) (1054-1057)

### Commanders

⠀Ivar Ó Ímair †Echmarcach Ó Ímair †Mac Congail Ó ÍmairWadter Ó Ímair

## Conflicts

### East Irish Conflict (989-1064)

#### Dubhlinner Succession Crisis (989-1061)

Phase 1 - Ivar's Coup (989-993) - Upon the death of his father Sigtrygg Ó Ímair would rise to become High Chiefof Dubhlinn, but promises by Sigtygg's father to Ivar Ó Ímair, his nephew and High Chief of Waterford, would develop into a dispute, not long after his ascension Sigtygg would be exiled to Laigan and Ivar became High Chief, he would hold this title until 993.

Phase 2 - Expulsion of Ivar (993-994) - Ivar would be expelled by Sigtrygg and his army of mercenaries from the Dubhlinner Free Company which he had formed in 993 after being ousted by Ivar. Ivar would remain in Waterford until 994. The Dubhlinner Free Company would be passed down to Domnall Ó Chennselaig, a close friend of Sigtrygg, and son of Donnchad Mael Ó Chennselaig.

Phase 3 - Waterford's Invasion (994-995) - In 994 Ivar would return with his army from Waterford and once again overthrow Sigtrygg, who would flee back to Laigan. Ivar would once again become High Chief of Dubhlinn alongside being Chief of Waterford.

Phase 4 - Diarmait's Expedition (995-1006) - High High Chief Diarmait Ó Chennselaig of Laigan and High King of Ireland, supported by his brother Domnall, head of the Dubhlinner Free Company would remove Ivar once and for all and reinstate Sigtygg in 1036 as a tributary of Laigan.

Phase 5 - Breaghan Succession Dispute (1006-1036) - After the death of his father Donnchad Mael Ó Chennselaig, Diarmait Ó Chennselaig would inherit the realms of Breagha and Laigan, however Echmarcach Ó Ímair would raise an mercenary army in Orkney and Galloway and march into Breagha and expel Diarmait in December 1006.

Phase 6 - First Echmarcach Era (1036-1038) - When Chief Wadter, son of Ivar, who had passed away in 1000 called upon Chief Echmarcach Ó Ímair of Breagha in 1038, to help him retake his father's lost realm, both armies would invade and conquer Dubhlinn, but Echmarach would then turn on Wadter and crown himself High Chief and end tribute to the High Chiefdom of Laigan.

Phase 7 - Ímar Era (1038-1046) - Ímar Ó Ímair, Prince of Innse Gall and Sigtygg's brother, would go on to conquer Dubhlinn in 1038, placing Dubhlinn under a Personal Union of Innse Gall, but administered by Sigtygg.

Phase 8 - Second Echmarcach Era (1046-1052) - In 1046 Echmarcach would go on to invade both Dubhlinn and Innse Gall, expelling Ímar and Sigtygg who would go on to live in exile in Laigan. having succeeded this Echmarcach became, High Chief of Dubhlinn, Chief of Breagha and Prince of Innse Gall.

Phase 9 - Chennselaig Invasion of Leinster (1052-1061) - In 1052 Murchad Ó Chennselaig, son of High Chief Diarmait, would invade Dubhlinn and Breagha with his cousin Mael Morda Ó Chennselaig, son of Domnall, and new head of the Dubhlinner Free Company after his father had gone on pilgrimage in 1039. Murchad would succeed and become High Chief of Dubhlinn, while Mael Morda would become Chief of Breagha, leaving only Innse Gall to Echmarcach. The Dubhlinner Free Company would change hands again to Guðfriðr Ó Chennselaig, brother of Murchad.

#### Irish Sea Conflict (1061-1064)

Phase 1 - Dubhlinner Invasion of Innse Gall (1061-1064) - In 1061 Dubhlinn with the support of the Dubhlinner Free Company would invade and conquer the Principality of Innse Gall, making Murchad Prince of Innse Gall, on top of being High Chief of Dubhlinn, Guðfriðr Ó Chennselaig as a reward would be gifted the Jarldom of Mann within the Principality of Innse Gall, with the Dubhlinner Free Company being handed to Ægir Mæra. Echmarcach Ó Ímair would flee to the Kingdom of Galloway

Phase 2 - Battle of Farines (1064) - In 1064 Echmarcach would raise an army to invade Dubhlinn while Galloway, however he would be killed in a skirmish between his army and a Manx raiding party, which had come across the army by accident. In 1065 Dubhlinn along with the Kingom of Alba would form the Celtic Alliance, and later that year Breagha and Laigan would join the alliance too.

### Siward's Expedition (1054-1057)

In 1054 Earl Siward of Northumbria would invade Alba in an attempt to reclaim Bernicia, he would be supported by Strathclyde, which had declared independence immediately after the Northumbrian declaration of war on Alba, and Galloway, under King Mac Congail Ó Ímair, who would attempt to usurp Glúniairn of the rival Ó Chennselaig dynasty and take Bernicia as his own. However this campaign would fail and Northumbria would sign a treaty within a year, but Strathclyde and Galloway would continue their invasion, which would result in the death of King Macbeth of Alba, but nothing more and Strathclyde would be reintegrated into Alba, while the Mac Congail returned to Galloway with a small portion of his army remaining.