[2] Prince Yuri Nikitich Trubetsky, as he was called in the earlier life, began his service at the tsarist court of Feodor I of Russia in the rank of rynda and stolnik.

[4] In October 1596, Prince Trubetsky was "the first rynda in the white coat" during the reception of the Lithuanian ambassador Jan Radziwiłłowicz Gołubicki at Tsar Feodor Ioannovich.

In July 1597, during the reception of the Austrian ambassador Burgrave Abraham Donawski with Tsar Feodor Ioannovich, Prince Trubetsky was the first rynda again.

[9] In May 1606, Prince Trubetsky was "the first rynda in the white coat" to False Dmitry I during the receptions of the Sandomierz voivode Jerzy Mniszech and the Polish embassy under the leadership of Mikołaj Oleśnicki, and Aleksander Korwin Gosiewski.

[10] On 8 May 1606, during the wedding of the Tsar False Dmitry I with a Polish szlachta lady Marina Mniszech, Prince Trubetsky was "the first rynda in the white coat".

[9][11] From 1606 to 1608 on the side of the Tsar Vasily Shuisky he took part of the battles against Bolotnikovites, Polish-Lithuanian invaders and supporters of False Dmitry II.

False Dmitry II appointed Prince Trubetsky to boyar and Master of the Horse, that was the head of The Конюшенный приказ (Stable order).

On 28 February 1609, Vasily Shuisky signed the Treaty of Vyborg with the King Charles IX of Sweden, establishing the military alliance with the Polish-Lithuanian Commonwealth's main rival.

Russia agreed to cede Korela Fortress and Kexholm County to Sweden in exchange of military assistance in fighting False Dmitry II and the Polish.

In response, King Sigismund formally declared war on Russia, hoping to gain territorial concessions and to weaken the ally of Sweden, and Polish troops crossed the Russian borders to Siege of Smolensk (1609–11).

In February of the same year, the Tushino embassy signed an agreement with the King of Poland to elect his eldest son Władysław IV Vasa to the tsarist throne of Russia.

On this compromise, the Muscovites allowed Polish troops enter the city and occupy the Kremlin, and the Seven Boyars accepted Władysław as the Tsar of Russia in September 1610.

However, in the «Книга глаголемая Новый летописец», it was asserted that the former residents of Tushino agreed to take the oath to Prince Władysław only then he will arrive to Moscow.

Tens of thousands died in battles and riots as enormous bands of brigands swarmed everywhere, and continuing Tatar raids left the southern borderlands of Russia completely depopulated and devastated.

[12] From 17 to 19 March 1611, the Polish garrison in Kremlin was besieged by the First Volunteer Army led by Prokopy Lyapunov, the governor of Ryazan, but the poorly armed militia failed to take the fortress.

[13] In October 1611, the Prince Yuri, together with his father-in-law, boyar Mikhail Glebovich Saltykov, headed the embassy from the provisional government of Semboyarshchina to the Rzeczpospolita.

In 1611, the King of the Polish-Lithuanian Commonwealth, Sigismund III Vasa, granted Prince Trubetsky a specific possession of his ancient ancestral patrimony – the city of Trubetsk with surrounding lands.

Prince Yuri went to union with Sigismund III Vasa, the King of Poland, and converted to Roman Catholic under the name of Wigund-Jeronym Trubecki.

Well armed and organised, the Second Volunteer Army took Yaroslavl in March 1612 and set up a provisional government of Russia, getting support and provisions from many cities.

On 3 September, Chodkiewicz launched another attack that managed to reach the walls of the Kremlin, but the narrow streets halted the movement of his troops and after the Russian counter-attack he ordered them to retreat from Moscow.

From the marriage he had two sons: Piotr Trubecki (d. 1644), the Prince of Trubetsk from 1634 to 1644; earlier podkomorzy and marshal of Starodub, chamberlain of the Royal court of Wladislaus IV of Poland.