Title: Gagarinskiĭ seminar
Subjects: Congresses, Homes and haunts, Nobility, Manors, History
Places: Russia (Federation), Porkhovskiĭ raĭon, Russia, Porkhovskiĭ raĭon (Russia)
People: Andreĭ Grigorʹevich Gagarin kni︠a︡zʹ (1855-1920), A. P. Gagarin kni︠a︡zʹ