1343 in Ireland

Events

• May 19 – Robert Savage is appointed Seneschal of Ulster.
• October 26 – Ferghal mac Diarmata becomes Lord of Moylurg after his brother, Conchobhar Mac Diarmada, dies.
• Muircheartach Ó Briain, King of Thomond, dies. He is succeeded by his brother, Diarmaid, who is expelled by Brian Bán MacDomnaill Ó Briain.
• Toirdhealbhach Ó Conchobhair recovers kingship of Connacht from Aodh mac Aodh Breifneach. He makes peace with Mac Diarmada.
• King Niall Ó Domhnaill of Tir Conaill is deposed by his nephew Aonghus, with the aid and support of O Baoighill, Ó Dochartaigh, the MacSweenys and Aodh Reamhar Ó Neill.
• Clann Mhuircheartaigh is expelled from Bréifne by Ualgarg Mór Ó Ruairc, O Conchobhair, and Tadgh Mág Ragnaill. He is given refuge by King Aonghus of Tír Conaill in Tír Aodha.
• Clanricarde and de Berminghams invade Uí Maine.
• Maurice Earl of Desmond occupies Imokilly.
• John L'Archers, Prior of the Order of St. John of Jerusalem appointed Lord Chancellor of Ireland

  Births

Deaths

• October 26 – Conchobhar Mac Diarmada, Lord of Moylurg;
• Muircheartach Ó Briain, King of Thomond