Sergei Nikolaevich Trubetskoy Russian philosopher, professor and rector of the Imperial Moscow University. (1862–1905) Parents Sofya Lopukhina Nikolai Petrovitch Troubetzkoy Children Mariya Trubetskaya Vladimir Trubetzkoy Nikolai Trubetzkoy Siblings Yevgeny Trubetskoy Elizaveta Trubetskaya Grigory Trubetskoy Aleksandra Trubetskaya Varvara Lermontova Antonina Trubetskaya Olga Trubetskaya Marina Trubetskaya Maria Trubetskaya Sofya Trubetskaya Pyotr Trubetskoy Partners Praskovya Obolenskaya
