Mullaghmast and Rory Óg
Archived: 17 October 2026
In 1578 Tudor efforts to impose plantation, taxation, courts and provincial authority provoked continuing conflict across Ireland. At Mullaghmast, Francis Cosby allegedly murdered about seventy unarmed O’Mores, deepening resistance to the Laois plantation. Rory Óg O’More raided neighbouring districts before crown-aligned forces killed him in summer; his displayed head symbolised coercion, not pacification. Fiach MacHugh O’Byrne made precarious submissions while surviving attempted ambushes. Lord Justice William Drury combined bargains, judicial tours and religious pressure, securing temporary agreements with Desmond and other lords. Conflict also touched Connacht, while learned Gaelic households endured and Smerwick Harbour received a wrecked Frobisher expedition vessel.