Pictish

Pictish is an extinct Brittonic Celtic language that was spoken by the Picts, the people of eastern and northern Scotland from late antiquity to the Early Middle Ages. The language is only attested in several tens of inscriptions in ogham and Latin alphabets, in addition to a limited number of geographical and personal names found on monuments and early medieval records in the area controlled by the kingdoms of the Picts. Such evidence, however, shows the language to be an Insular Celtic language – possibly a variant of the Brittonic language, once thought to be spoken in most of Great Britain, or a distinct branch, closely related to Brythonic, known as Pritenic.

The prevailing view in the second half of the 20th century was either that Pictish was a non-Indo-European language isolate, or that there coexisted not one but two Pictish languages: one Indo-European (Brittonic Celtic branch) and the other non-Indo-European.