Comh-Bhriotainis
Teanga Cheilteach labhartha sa Bhreatain agus sa Bhriotáin ba ea  Comh-Bhriotainis (dí-mholta  Briotainis Choiteann) (; ; ).

Is teanga de chuid Ceiltis na nOileán í, fréamhaithe ó .  Tá gaol ann le Cruithnis.

Cuireann fianaise ón mBreatnais in úil go raibh an-tionchar ag an Laidin ar an mBriotainis le linn na ré Rómhánaí, go háirithe téarmaí gaolmhar leis an eaglais agus le Críostaíocht an Iarthair.  Faoin séú haois AD, bhí teanga na mBriotanach Ceilteach ag scaradh ina Nua-Bhriotainic: Breatnais, Coimbris, Coirnis, Briotáinis agus b'fhéidir Cruithnis.

Tháinig teangacha eile chun cinn in ionad Briotainic in Albain (Gaeilge na hAlban) agus i Sasana agus chomh maith le hAlbain taobh ó dheas de Linne Foirthe (Sean-Bhéarla, as a thagann Béarla agus Albainis).  Fuair Coimbric bás sa 12ú haois agus d'éag Coirnis san iardheisceart san ochtú haois déag, cé go bhfuil athbheochan ar siúl ann.  Is iad Breatnais agus Briotáinis amháin atá tagtha slán go dtí an lae inniu.

Mhol Tomás Ó Rathaile go raibh teanga Bhriotainice i nÉirinn roimh theacht na dTeangacha Gaelacha, ach ní aontaítear go forleathan leis an tuairim seo.

Foinsí 
 Filppula, M.; Klemola, J.; Pitkänen, H. (2001); The Celtic Roots of English, (Studies in Languages, No. 37); University of Joensuu, Faculty of Humanities; .
 Forsyth, K. (1997), Language in Pictland.
 Jackson, Kenneth H. (1953), Language and History in Early Britain.
 Jackson, Kenneth H. (1955), "The Pictish Language"; in F. T. Wainwright, The Problem of the Picts; Londain: Nelson.
 Koch, John T. (1986), "New Thought on Albion, Ieni and the 'Pretanic Isles'", Proceedings of the Harvard Celtic Colloquium, 6: ll. 1–28.
 Lambert, Pierre-Yves [eag.] (2002), Recueil des inscriptions gauloises II.2. Textes gallo-latins sur instrumentum; Páras: CNRS Editions; ll. 304–306.
 Lambert, Pierre-Yves (2003), La langue gauloise; 2a heagrán; Páras: Editions Errance; lch. 176.
 Lockwood, W. B. (1975), Languages of the British Isles Past and Present; Londain: Deutsch; .
 Ostler, Nicholas (2005), Empires of the Word; Londain: HarperCollins; .
 Price, Glanville. (2000), Languages of Britain and Ireland; Blackwell; .
 Rivet, A. agus Smith, C. (1979), The Place-names of Roman Britain
 Sims-Williams, Patrick (2003), The Celtic Inscriptions of Britain: Phonology and Chronology, c. 400–1200; Oxford, Blackwell; .
 Ternes, Elmar [eag.] (2011), Brythonic Celtic – Britannisches Keltisch: From Medieval British to Modern Breton; Bremen: Hempen Verlag.
 Trudgill, P. [eag.] (1984), Language in the British Isles; Cambridge University Press.
 Willis, David (2009), "Old and Middle Welsh"; in The Celtic Languages, 2a heagrán; eag. Martin J. Ball & Nichole Müller; Nua Eabhrac: Routledge; ; ll. 117–160.

Tagairtí
Teanga Cheilteach labhartha sa Bhreatain agus sa Bhriotáin ba ea Comh-Bhriotainis ( dí-mholta Briotainis Choiteann ) ( ;; ) . Is teanga de chuid Ceiltis na nOileán í , fréamhaithe ó \. Tá gaol ann le Cruithnis . Cuireann fianaise ón mBreatnais in úil go raibh an-tionchar ag an Laidin ar an mBriotainis le linn na ré Rómhánaí , go háirithe téarmaí gaolmhar leis an eaglais agus le Críostaíocht an Iarthair . Faoin séú haois AD , bhí teanga na mBriotanach Ceilteach ag scaradh ina Nua-Bhriotainic : Breatnais , Coimbris , Coirnis , Briotáinis agus b' fhéidir Cruithnis . Tháinig teangacha eile chun cinn in ionad Briotainic in Albain ( Gaeilge na hAlban ) agus i Sasana agus chomh maith le hAlbain taobh ó dheas de Linne Foirthe ( Sean-Bhéarla , as a thagann Béarla agus Albainis ) . Fuair Coimbric bás sa haois agus d' éag Coirnis san iardheisceart san ochtú haois déag , cé go bhfuil athbheochan ar siúl ann . Is iad Breatnais agus Briotáinis amháin atá tagtha slán go dtí an lae inniu . Mhol Tomás Ó Rathaile go raibh teanga Bhriotainice i nÉirinn roimh theacht na dTeangacha Gaelacha , ach ní aontaítear go forleathan leis an tuairim seo . Foinsí Filppula , M. ; Klemola , J. ; Pitkänen , H . The Celtic Roots of English , ( Studies in Languages , No . University of Joensuu , Faculty of Humanities ; \. Forsyth , K . Language in Pictland . Jackson , Kenneth H . Language and History in Early Britain . Jackson , Kenneth H . " The Pictish Language" ; in F. T. Wainwright , The Problem of the Picts ; Londain : Nelson . Koch , John T . "New Thought on Albion , Ieni and the ' Pretanic Isles ' " , Proceedings of the Harvard Celtic Colloquium , ll. 1–28 . Lambert , Pierre-Yves [ eag.] Recueil des inscriptions gauloises II.2 . Textes gallo-latins sur instrumentum ; Páras : CNRS Editions ; ll. 304–306 . Lambert , Pierre-Yves La langue gauloise ; heagrán ; Páras : Editions Errance ; lch. 176 . Lockwood , W . B . Languages of the British Isles Past and Present ; Londain : Deutsch ; \. Ostler , Nicholas Empires of the Word ; Londain : HarperCollins ; \. Price , Glanville . Languages of Britain and Ireland ; Blackwell ; \ . Rivet , A . agus Smith , C. The Place-names of Roman Britain Sims-Williams , Patrick The Celtic Inscriptions of Britain : Phonology and Chronology , c.1200 ; Oxford , Blackwell ; \. Ternes , Elmar [ eag.] Brythonic Celtic – Britannisches Keltisch : From Medieval British to Modern Breton ; Bremen : Hempen Verlag . Trudgill , P. [ eag.] Language in the British Isles ; Cambridge University Press . Willis , David "Old and Middle Welsh " ; in The Celtic Languages , heagrán ; eag . Martin J. Ball & Nichole Müller ; Nua Eabhrac : Routledge ; ; ll. 117–160 . Tagairtí