Person

Muirchertach Ó Briain (d. 1343)

d. 1343 · 14th century

Muirchertach Ó Briain was king of Thomond, in north Munster, from 1317 to 1343. He won the throne in a civil war among the O'Briens, and in 1318 his side destroyed the army of the Anglo-Norman lord Richard de Clare at Dysert O'Dea, ending Norman attempts to conquer Thomond. Gaelic rule west of the Shannon survived for more than two centuries afterwards.

Mentioned in 1 state history

See also

Cite this entry
APA
The Epoch Institute. (2026). Muirchertach Ó Briain (d. 1343). In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/muirchertach-o-briain-d-1343
MLA
“Muirchertach Ó Briain (d. 1343).” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/muirchertach-o-briain-d-1343. Accessed .
Chicago
The Epoch Institute. “Muirchertach Ó Briain (d. 1343).” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/muirchertach-o-briain-d-1343.
Harvard
The Epoch Institute (2026) ‘Muirchertach Ó Briain (d. 1343)’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/muirchertach-o-briain-d-1343 (Accessed: ).

Last reviewed October 2026Random entry ↻