Prince Grigorii Nikolaevich Trubetskoi was born on September 14 (26), 1873 in the family estate of Akhtyrka , Mitinsky volost , Dmitrovsky district , Moscow province . In 1892, Trubetskoi entered the Faculty of History and Philology of Moscow University, and in October 1896 he began serving in the Asian Department of the Ministry of Foreign Affairs of the Russian Empire. Giorgii Nikolayevich was sent to Constantinople in March 1897 to work at the embassy. He held the position of assistant secretary, and then, from 1901, he worked as the second secretary of the embassy. In 1905, his work in the Foreign Office ended. He set about creating, together with his relatives, the Moscow Weekly publication, in which Nikolai Astrov, Nikolai Lvov, Pyotr Struve, Sergei Bulgakov published. In 1908, Trubetskoi left for the Balkans and again took up issues of Russian foreign policy. In 1911, he was the head of the Office of the Minister of Foreign Affairs Sazonov and became his special confidant. A year later, in 1912, Grigory Nikolayevich took the chair of the head of the Department of the Middle East in the ministry. During the First World War, Trubetskoy worked on the diplomatic front. In August 1914 he drew up a document, signed by Grand Duke Nikolai Nikolaevich, who guaranteed to grant autonomy to Poland after the end of the war. From 1914 to 1915 he was envoy to Serbia. Trubetskoi defended and promoted Russian interests in the Balkans and Eastern Europe. In 1917 he took part in the work of the Local Council of the Russian Orthodox Church . After the October Revolution, in November he joined the anti-Bolshevik Right Center, and already in December 1917, Grigory Nikolayevich moved to Novocherkassk.¹
Trubetskoi became a member of the Council of the Volunteer Army. From 1918 to 1920 , he was the managing department of confessions of the Special Conference under the Armed Forces of the South of Russia. Giorgii Nikolaevich was elected a deputy chairman of the South-Eastern Russian Church Council in May 1918 . In 1920, he became deputy head of the Foreign Relations Department in the Wrangel government , which was occupied by Pyotr Struve. Since 1920, he lived in exile, in the city of Baden near Vienna, together with his family, and organized an Orthodox parish there. Then he moved to Paris, where he became one of the organizers and a member of the parish council of the Sergius metochion . Trubetskoy was also a member of the founding committee of the St. Sergius Orthodox Theological Institute in Paris . In 1923, Grigory Nikolaevich left for Clamart and became one of the members of the Paris bureau of the Brotherhood of Saint Sophia.²
He also supported the Russian Student Christian Movement (RSKhD). In 1927 he founded the Icon Society in Paris, was fond of Eurasian ideas. On January 6, 1930, Grigorii Nikolaevich Trubetskoi died in Clamart.³