Cathal mac Tadg
Irish king
About Cathal mac Tadg
Lived 901 – 973 (aged 71–72).
Cathal mac Tadg was King of Connacht, 973.
Cathal only briefly succeeded his brother. Murchadh Glunillar ua Flaithbheartach, King of Aileach, invaded Connacht and gave battle to Cathal at Ceis Corran. Cathal was killed as were some of his prime vassals - "Geibheannach, son of Aedh, lord of Ui-Maine; Tadhg, son of Muircheartach, chief of Ui-Diarmada; Murchadh, son of Flann, son of Glethneachan, chief of Clann-Murchadha; and Seirridh Ua Flaithbheartaigh, with a countless number along with them."
Murchadh totally plundered Connacht afterwards, while Cathal was succeeded as King of Connacht by Cathal mac Conchobar mac Taidg.
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Important facts
Contemporaries
People whose lives overlapped Cathal mac Tadg's
Frequently asked questions
Who was Cathal mac Tadg?
Irish king
When was Cathal mac Tadg born?
Cathal mac Tadg was born in 901.
When did Cathal mac Tadg die?
Cathal mac Tadg died in 973.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Cathal mac Tadg. https://biography.guide/cathal-mac-tadg/
MLA: "Cathal mac Tadg." Biography.guide, https://biography.guide/cathal-mac-tadg/.
Chicago: "Cathal mac Tadg." Biography.guide. https://biography.guide/cathal-mac-tadg/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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