[1] On 12 May 1879, Therese married Prince George Maximlianovich Romanovsky (1852–1912), youngest son of Maximilian de Beauharnais, 3rd Duke of Leuchtenberg and his wife Grand Duchess Maria Nikolaevna of Russia.

[5] Therese and George had one son, HIH[6] Alexander Georgievich, 7th Duke of Leuchtenberg (13 November 1881 – 26 September 1942),[1] who would later feature in many 1909 newspapers after rumors spread that he entered into a morganatic marriage with American Marjorie Gould.

[2] In 1912, Alexander was reported to have gained the reluctant consent of Emperor Nicholas to marry the wealthy commoner, Marriane Friedlander Fuld, but only on the condition that the union would be considered unequal, with none of his titles being passed onto his wife or possible children.

[7] Despite being the senior descendant of Eugène de Beauharnais (son of Empress Joséphine), Alexander was far from rich, and served as a captain of the Russian Hussars of the guard and as an aide-de-camp to the Emperor.

Later that year, while lodging with Prince Felix Yusupov, Alexander was arrested by Bolshevik authorities, along with four or five prominent members of the monarchical party.