Tnúthgal mac Donngaile
King of Munster
Tnúthgal mac Donngaile (or Tnúthgal mac Donngusa) (died 820) was a supposed King of Munster from the Eóganacht Chaisil branch of the Eoganachta. He was a fifth generation descendant of Colgú mac Faílbe Flaind (died 678), a previous king.
Tnúthgal appears in some king lists but this is suspect. He is not mentioned in the Irish annals and his death date of 820 is based on the accession of Feidlimid mac Cremthanin (died 847) in that year. A confusion between him and Tnúthgal mac Artrach (died circa 807) may have occurred.
His grandsons Áilgenán mac Donngaile (died 853) and Máel Gualae mac Donngaile (died 859) were Kings of Munster.
“Tnúthgal mac Donngaile” enters the record as king of Munster. Crown Archives preserves that source wording while asking what Tnúthgal, Donngaile and King can confirm, complicate or overturn.
Why this record matters
“Tnúthgal mac Donngaile” is worth following because a concise public description often conceals a longer documentary argument. Here, Tnúthgal, Donngaile and King provides the most credible route into that argument.
The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Mar 24, 2026. The linked authority identifier is Q7810796. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
Later biographies can compress uncertainty and repeat inherited reputations, so apparently settled claims may still require comparison. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Three-step research path
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Questions for further research
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This entry incorporates text from “Tnúthgal mac Donngaile” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.