Ivan Ivanovich Gornostaev (1821–1874), preservationist of historical buildings and chief architect of Saint Petersburg Public Library and University
Gornostaev's life changed when he received an invitation from Damaskin (1795–1881, born Demyan Kononov), Hegumen of Valaam Monastery to rebuilt the monastery and its numerous hermitages.
Gornostaev, keen on preserving historical buildings, performed surveys of Monastery of Saint Euthymius in Suzdal, Kursk Cathedral, Baturin and various Moscow landmarks and collaborated with Igor Grabar on "History of Russian arts" (История русского искусства).