#rusyn language

Wikipedia:

Rusyn (Rusyn: русинська бесіда or русиньскый язык[10]), also known in English as Ruthene (sometimes Ruthenian), is an East Slavic language variety spoken by the Rusyns of Central Europe. Some linguists treat it as a distinct language[11] and it has its own ISO 639-3 code; others treat it as a dialect of Ukrainian.[12] Each categorisation has controversial political implications.

Rusyn (and more specifically Carpatho-Rusyn) is the vernacular spoken in the Transcarpathian Region of Ukraine, in northeastern Slovakia, southeastern Poland (where it is often described as łemkowski 'Lemko', from their characteristic word лем / lem 'only', or Lyshak) and Hungary (where the people and language are called Ruthene).

Carpatho-Rusyn.org:

When, in the seventeenth century, Carpatho-Rusyns began to publish books, they were written either in the vernacular Rusyn speech or in Church Slavonic, a liturgical language (functionally similar to Latin) used by East Slavs and South Slavs who were of an Eastern Christian religious orientation. In the nineteenth and twentieth centuries, Carpatho-Rusyn writers continued to use Rusyn vernacular and also began to use Russian and Ukrainian for their literary language. The so-called "language question" was always closely related to the problem of national identity.