Old Novgorod dialect
The Old Novgorod dialect (Russian: древненовгородский диалект, romanized: drevnenovgorodskiy dialekt, lit. 'ancient Novgorodian dialect'), also known as Old Novgorodian, was the East Slavic variety used in the city of Veliky Novgorod and its surrounding area. It is mainly known from medieval birch bark writings dating to the 11th to 15th centuries.