Finnish literature refers to literature written in Finland. During the European early Middle Ages, the earliest text in a Finnic language is the unique thirteenth-century Birch bark letter no. 292 from Novgorod. The text was written in Cyrillic and represented a dialect of Finnic language spoken in Russian Olonets region. The earliest texts in Finland were written in Swedish or Latin during the Finnish Middle Age. Finnish-language literature was slowly developing from the 16th century onwards, after written Finnish was established by the Bishop and Finnish Lutheran reformer Mikael Agricola (1510–1557). He translated the New Testament into Finnish in 1548.