Proto-Brythonic

E297998

Brittonic language Proto-Celtic language reconstructed language

Proto-Brythonic is the reconstructed common ancestor of the Brittonic Celtic languages, including Welsh, Cornish, and Breton, spoken in Britain during the first millennium CE.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
Brythonic languages	1
Proto-Brittonic	1
Proto-Brythonic canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T2765053 — 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: Proto-Brythonic
Context triple: [Welsh, hasAncestor, Proto-Brythonic]

A. Proto-Celtic
Proto-Celtic is the reconstructed common ancestor of the Celtic languages, spoken in prehistoric times before their diversification into distinct branches such as Goidelic and Brythonic.
B. Proto-Goidelic
Proto-Goidelic is the reconstructed early Celtic language stage that gave rise to the Goidelic branch, including Primitive Irish and later Irish, Scottish Gaelic, and Manx.
C. Celtic languages
The Celtic languages are an ancient branch of the Indo-European language family once widespread across Europe, now represented mainly by languages such as Irish, Welsh, and Breton spoken in parts of the British Isles and Brittany.
D. Continental Celtic languages
Continental Celtic languages are the now-extinct Celtic languages once spoken on the European mainland, such as Gaulish and Celtiberian, known primarily from inscriptions and classical sources.
E. Insular Celtic languages
Insular Celtic languages are the branch of the Celtic language family that developed in and around the British Isles, including languages such as Irish, Scottish Gaelic, Welsh, and Breton.
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: Proto-Brythonic
Target entity description: Proto-Brythonic is the reconstructed common ancestor of the Brittonic Celtic languages, including Welsh, Cornish, and Breton, spoken in Britain during the first millennium CE.

A. Proto-Celtic
Proto-Celtic is the reconstructed common ancestor of the Celtic languages, spoken in prehistoric times before their diversification into distinct branches such as Goidelic and Brythonic.
B. Proto-Goidelic
Proto-Goidelic is the reconstructed early Celtic language stage that gave rise to the Goidelic branch, including Primitive Irish and later Irish, Scottish Gaelic, and Manx.
C. Celtic languages
The Celtic languages are an ancient branch of the Indo-European language family once widespread across Europe, now represented mainly by languages such as Irish, Welsh, and Breton spoken in parts of the British Isles and Brittany.
D. Continental Celtic languages
Continental Celtic languages are the now-extinct Celtic languages once spoken on the European mainland, such as Gaulish and Celtiberian, known primarily from inscriptions and classical sources.
E. Insular Celtic languages
Insular Celtic languages are the branch of the Celtic language family that developed in and around the British Isles, including languages such as Irish, Scottish Gaelic, Welsh, and Breton.
F. None of above. chosen

Statements (51)

Predicate	Object
instanceOf	Brittonic language ⓘ Proto-Celtic language ⓘ reconstructed language ⓘ
ancestorOf	Breton ⓘ Cornish ⓘ Cumbric ⓘ linked to: Cumbric language Pictish ⓘ Welsh ⓘ
followedBy	Old Breton ⓘ Old Cornish ⓘ Old Welsh ⓘ
follows	Common Brittonic ⓘ linked to: Brittonic Proto-Celtic ⓘ
hasCaseSystem	reduced compared to Proto-Celtic ⓘ
hasGender	feminine ⓘ masculine ⓘ neuter (largely lost in descendants) ⓘ
hasNumber	dual (residual) ⓘ plural ⓘ singular ⓘ
influenced	mountain names in Britain ⓘ river names in Britain ⓘ toponymy of Britain ⓘ
languageBranch	Celtic ⓘ
languageFamily	Indo-European ⓘ linked to: Indo-European language family
languageSubbranch	Brittonic ⓘ
partOf	Brittonic branch of Celtic ⓘ
phonologicalChangeFrom	Proto-Celtic development of stressed penultimate syllable ⓘ Proto-Celtic lenition of intervocalic stops ⓘ Proto-Celtic loss of final syllables ⓘ
reconstructedFrom	Breton ⓘ Cornish ⓘ Welsh ⓘ inscriptions in Britain ⓘ place-names in Britain ⓘ
reconstructionMethod	comparative method ⓘ
sharesFeatureWith	VSO basic word order ⓘ conjugated prepositions ⓘ inflected prepositions ⓘ initial consonant mutation ⓘ lenition of consonants ⓘ use of verbal nouns ⓘ
spokenIn	Britain ⓘ linked to: Great Britain Great Britain ⓘ
subclassOf	Celtic language ⓘ Indo-European language ⓘ Insular Celtic language ⓘ
useTime	early Middle Ages ⓘ first millennium CE ⓘ late Roman period ⓘ
writingSystem	runic or ogham inscriptions (uncertain and sparse) ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Welsh → hasAncestor → Proto-Brythonic ⓘ

Insular Celtic languages → hasSubdivision → Brythonic languages ⓘ

linked to: Proto-Brythonic

Proto-Insular Celtic → differentFrom → Proto-Brittonic ⓘ

subject linked to: Proto-Insular Celtic (hypothetical)