Seithennin

E853216

figure in Welsh mythology legendary character mythological figure

Seithennin is a figure from Welsh legend, often depicted as a negligent or drunken guardian whose failure leads to the flooding and loss of the mythical kingdom of Cantre'r Gwaelod.

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All labels observed (2)

Label	Occurrences
Seithennin canonical	2
Seithenyn	1

How this entity was disambiguated

This entity first appeared as the object of triple T10271819 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Seithennin
Context triple: [Cantre'r Gwaelod, hasGuardianCharacter, Seithennin]

A. Nethuns
Nethuns is an Etruscan god primarily associated with water, especially wells and the sea, and is often linked to the later Roman god Neptune.
B. Seith Mann
Seith Mann is an American film and television director known for his work on acclaimed series such as "The Wire," "Homeland," and "The Walking Dead."
C. Hestur
Hestur is a small, sparsely populated island in the central Faroe Islands known for its steep cliffs, birdlife, and traditional Faroese landscape.
D. Vanth
Vanth is the small, likely captured moon of the distant Kuiper Belt dwarf planet Orcus.
E. Vanth
Vanth is an Etruscan underworld goddess or demoness, often depicted with wings and associated with guiding souls of the dead.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Seithennin
Target entity description: Seithennin is a figure from Welsh legend, often depicted as a negligent or drunken guardian whose failure leads to the flooding and loss of the mythical kingdom of Cantre'r Gwaelod.

A. Nethuns
Nethuns is an Etruscan god primarily associated with water, especially wells and the sea, and is often linked to the later Roman god Neptune.
B. Seith Mann
Seith Mann is an American film and television director known for his work on acclaimed series such as "The Wire," "Homeland," and "The Walking Dead."
C. Hestur
Hestur is a small, sparsely populated island in the central Faroe Islands known for its steep cliffs, birdlife, and traditional Faroese landscape.
D. Vanth
Vanth is the small, likely captured moon of the distant Kuiper Belt dwarf planet Orcus.
E. Vanth
Vanth is an Etruscan underworld goddess or demoness, often depicted with wings and associated with guiding souls of the dead.
F. None of above. chosen

Statements (31)

Predicate	Object
instanceOf	figure in Welsh mythology ⓘ legendary character ⓘ mythological figure ⓘ
appearsInTradition	legend of Cantre'r Gwaelod ⓘ
associatedWith	Gwyddno Garanhir ⓘ
associatedWithPlace	Cantre'r Gwaelod ⓘ linked to: sunken kingdom of Cantre'r Gwaelod Cardigan Bay ⓘ
category	Mythological flood figures ⓘ Welsh legendary people ⓘ
causeOf	flooding of Cantre'r Gwaelod ⓘ linked to: sunken kingdom of Cantre'r Gwaelod
characterTrait	careless ⓘ drunk ⓘ negligent ⓘ
culture	Welsh ⓘ
gender	male ⓘ
hasMotif	drunken guardian neglects duty ⓘ flood caused by human negligence ⓘ
knownFor	allowing the sea to overwhelm Cantre'r Gwaelod ⓘ drunkenness ⓘ negligence ⓘ
languageOfSources	Welsh ⓘ
mythology	Welsh mythology ⓘ
nameInLanguage	Welsh ⓘ
narrativeFunction	explanation for a legendary sunken land ⓘ moral example of the dangers of drunkenness ⓘ
regionOfLegend	Wales ⓘ
relatedConcept	moral tales about excess drinking ⓘ sunken kingdoms ⓘ
roleInMyth	guardian of sea defences ⓘ keeper of the sea‑walls ⓘ
timeOfOrigin	medieval Welsh tradition ⓘ