Oryol Governorate
Nikolay Gerasimovich Ustryalov (; 4 May (N.S. 16 May) 1805 in Bogorodickoye, Oryol Governorate, Russian Empire – 8 June (N.S. 20 June) 1870 in Tsarskoye Selo, Russian Empire) was a Russian Imperial historian who elaborated the Official Nationality Theory. His outline of Russia's history was awarded the Demidov Prize for the best Russian history textbook (1837) and was highly regarded by Nicholas I himself.