Triads of Ireland
collection of about 256 Old Irish triads
The title Trecheng Breth Féne "A Triad of Judgments of the Irish", more widely known as "The Triads of Ireland", refers to a miscellaneous collection of about 256 Old Irish triads (and some numerical variants) on a variety of topics, such as nature, geography, law, custom and behaviour. Its compilation is usually dated to the ninth century.
Form
The Triads of Ireland cover a vast range of subjects. Triads 1-31 are about monasteries, 32-61 cover geography, and 86-149 law. The rest are a miscellany with no apparent overarching structure. Though they are all called triads, only 214 of the 256 of the triads form groups of threes. There are also three dyads, seven tetrads, one nonad and 31 single items relating to monasteries at the start of the collection.
The following example is Triad 91:
The use of the triad form (arrangement into threes) to encapsulate certain ideas is neither distinctively Irish nor Celtic, but can be widely attested in many societies over the world, in part owing to its usefulness as a mnemonic device. It does appear to be particularly popular in the literatures of Celtic-speaking areas, one notable other example being the later Welsh collection Trioedd Ynys Prydein ("Triads of the Isle of Britain"). Beyond the particular form there is nothing to suggest a shared literary tradition.
This brief starts where responsible research should: with the source description of “Triads of Ireland” as collection of about 256 Old Irish triads. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as collection of about 256 Old Irish triads. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jan 26, 2026. The linked authority identifier is Q7839916. None of the 0 selected statements returned an explicit reference.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Triads of Ireland”, its source revision and the description used here.
- Expand the search: follow Triads of Ireland primary sources, Triads of Ireland archive and Triads research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Triads of Ireland”?
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This entry incorporates text from “Triads of Ireland” 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.