Prince Sergei Evgenievich Trubetskoy was born on February 27, 1890 in Moscow. Until 1906 he lived in Kyiv. The family returned to Moscow, and Sergei Evgenievich continued his studies at the gymnasium. In 1908 he entered the Moscow University at the Faculty of History and Philology. In the winter of 1911/1912, he became a deputy from the nobility in Kaluga under the command of Count Ilya Lvovich Tolstoy. Lived in the city of Begichev. With the outbreak of the First World War, Sergei Evgenievich makes an attempt to go to the front as a volunteer, but in the end he starts working as an assistant commissioner in an ambulance train. He was an assistant to the head of the Control Department in the Committee of the North-Western Front, then a deputy chairman of the front committee. He was also authorized in the Representation of " Zemgora " and in the Liquidation Commission for the Affairs of the Kingdom of Poland. Through his work in the Zemsky Union, he was acquainted with Prince Lvov.¹
During the revolution he was in Pskov and Petrograd. Then he ended up in Moscow, where he worked at his native university and was engaged in scientific activities. At times he lived in Begichev, where he entered into conflicts with the peasants. His father, philosopher Yevgeny Nikolaevich Trubetskoy, at that time left for the south of Russia. Then Sergei Evgenievich continued his life in Moscow and worked as a senior clerk in the Moscow Union of Cooperative Societies. In 1919-1920, Sergei Trubetskoy was one of the leaders of the All-Russian National Center and the Tactical Center under the leadership of Shchepkin, Leontiev, Melgunov. He was arrested in 1920 by the authorities of the All-Russian Extraordinary Commission (VChK) as an accomplice of the counter-revolutionary authorities. At first he was sentenced to death, then the execution was replaced by a 10-year term of imprisonment. In the same year, he was amnestied and the term was reduced to 5 years. At the request of the leadership of the historical and philological Moscow University, in 1921 Trubetskoy was able to attend scientific classes and institutions of the university. In July, Sergei Evgenievich was released from prison. He was arrested again on August 16, 1922, and by order of August 23, he was expelled from the country. In prison he met with Berdiaev, Frank and Metropolitan Kirill (Smirnov).²
In 1922, Sergei Trubetskoy signed petitions to leave abroad with his mother, sister, and Sofia Shcherbakova and her son. On a steamboat from St. Petersburg he left for Stetten (the modern Polish city of Szczecin). Trubetskoy took his mother and sister to Baden , where his uncle Grigory Nikolaevich Trubetskoy was . Then Sergei Evgenievich left for Berlin , where he joined the Russian All-Military Union (ROVS). His active work in emigre organizations continued from 1922 to 1938 . He was an adviser to General Kutepov and Miller . After the formal closure of ROVS , Sergei Evgenievich in 1938 began to actively engage in translations and journalism. Trubetskoy wrote memoirs , which later came out under the title " Past ", but part of the manuscript was lost as a result of the bombardment of the city .³ On October 24, 1949, he died in Clamart , France .⁴