 In the course of the administrative reform carried out in 1708 by Peter the Great, the area was included into Ingermanland Governorate (since 1710 known as Saint Petersburg Governorate), and in 1727 Novgorod Governorate split off.In 1775, Tver Viceroyalty was formed from the lands which previously belonged to Moscow and Novgorod Governorates.In 1770, the area was included into Vyshnevolotsky Uyezd of Tver Governorate, and between 1775 and 1796 it belonged to Tver Viceroyalty, which was subsequently transformed back to Tver Governorate.