About Forggus mac Muirchertaig
Forggus mac Muirchertaig was a monarch.
Forggus mac Muirchertaig (died c. 566), also called Forrgus mac Maic Ercae, is included in most lists of High Kings of Ireland.
His father was Muirchertach mac Muiredaig, also called Mac Ercae, and his brother was Domnall Ilchelgach with whom he is said to have ruled jointly. He succeeded Diarmait mac Cerbaill, and was followed by Ainmuire mac Sétnai.
His death is recorded in Adomnán's Life of Saint Columba.
The less reliable evidence of the Irish annals records that he and Domnall defeated Eógan Bél, grandson of Ailill Molt, and then, c. 550, Éogan's son Ailill Inbanda further west, in the region of Clew Bay, modern County Mayo. He also fought Diarmait in alliance with Aimmuire.
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Important facts
Related people
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Frequently asked questions
Who was Forggus mac Muirchertaig?
High King of Ireland
When did Forggus mac Muirchertaig die?
Forggus mac Muirchertaig died in 566.
What was Forggus mac Muirchertaig's occupation?
Forggus mac Muirchertaig was a monarch.
Sources & further reading
· Wikipedia: Forggus mac Muirchertaig
· DBpedia: Forggus mac Muirchertaig
Cite this page
APA: Biography.guide. (2026). Forggus mac Muirchertaig. https://biography.guide/forggus-mac-muirchertaig/
MLA: "Forggus mac Muirchertaig." Biography.guide, https://biography.guide/forggus-mac-muirchertaig/.
Chicago: "Forggus mac Muirchertaig." Biography.guide. https://biography.guide/forggus-mac-muirchertaig/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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