 Prince Gagarin also owned several businesses throughout Russia and Europe.In 1819, Prince Gagarin married Maria Alexeeva Bobrinsky (Bobrinkaya), granddaughter of Catherine II of Russia and Prince Gregory Orlov.On October 16, 1833, Gagarin was appointed a post of vice-president of the His Majesty's Cabinet under Emperor Nicholas I and Chairman Viktor Kochubey; in December 1837, he was appointed member of the commission for the restoration of the Winter Palace after a fire.