About Diarmait mac Cerbaill
Diarmait mac Cerbaill was a monarch.
Diarmait mac Cerbaill (died ) was King of Tara or High King of Ireland. According to traditions, he was the last High King to follow the pagan rituals of inauguration, the ban-feis or marriage to goddess of the land. The last High King to observe the ancient pagan Feis Temrach or Assembly of Tara which took place on Samhain every three years to pass or renew laws, approve annals and records.
While many later stories were attached to Diarmait, he was a historical ruler and his descendants were of great significance in Medieval Ireland.
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Important facts
Related people
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Frequently asked questions
Who was Diarmait mac Cerbaill?
High King of Ireland
When did Diarmait mac Cerbaill die?
Diarmait mac Cerbaill died in 565.
What was Diarmait mac Cerbaill's occupation?
Diarmait mac Cerbaill was a monarch.
Sources & further reading
· Wikipedia: Diarmait mac Cerbaill
· DBpedia: Diarmait mac Cerbaill
Cite this page
APA: Biography.guide. (2026). Diarmait mac Cerbaill. https://biography.guide/diarmait-mac-cerbaill/
MLA: "Diarmait mac Cerbaill." Biography.guide, https://biography.guide/diarmait-mac-cerbaill/.
Chicago: "Diarmait mac Cerbaill." Biography.guide. https://biography.guide/diarmait-mac-cerbaill/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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