, in 1805 On 3 August 1809, George married
Grand Duchess Catherine Pavlovna of Russia, the fourth daughter of
Paul I of Russia and
Sophie Dorothea of Württemberg and favorite sister of the Emperor
Alexander I of Russia. The events behind their marriage began when
Napoleon Bonaparte, hoping to secure a Russian alliance as well as a male heir, hinted his desire to marry Catherine after finalizing his divorce with
Empress Joséphine. This so horrified the Russian imperial family that Catherine's mother immediately arranged her marriage to her cousin, Duke George. The day the marriage occurred, Duke George received the style
Imperial Highness and was appointed the governor-general of the three central provinces of
Tver,
Yaroslavl and
Novgorod. Though their marriage was arranged, it was happy. Catherine was considered beautiful and vivacious and was devoted to her husband. As George was a younger son with little prospects of inheriting the
Grand Dukedom of Oldenburg, he and Catherine lived in
Tver, Russia. Their family adopted the use of Russian patronyms and were known as the
Oldenburgsky. They had two sons: • Duke Peter Georg Paul
Alexander of Oldenburg (30 August 1810 – 16 November 1829) •
Duke Konstantin Friedrich Peter of Oldenburg (26 August 1812 – 14 May 1881) ==Later life==