Ruthenian was a written language used from the 14th to the 18th centuries within the East Slavic-speaking regions of the Grand Duchy of Lithuania and later the Polish-Lithuanian Commonwealth. Literary
Belarusian is an East Slavic language. It is one of the two official languages in Belarus, the other being Russian. It is also spoken in parts of Russia, Lithuania, Latvia, Poland, Ukraine, and the Un
Ruthenian language
…the Grand Duchy of Lithuania and later the Polish-Lithuanian Commonwealth. Literary Ruthenian is considered to be a historical precursor to the modern Belarusian and Ukrainian languages (occasionally also to Rusyn), although neither standard language directly continues the Ruthenian written tradition. Several…
Monolingually Belarusian sign by the Minsk metro.
The Casimir's Code of 1468, in Ruthenian
The third Lithuanian statute of 1588, all three written in Ruthenian