Princess Zinaida Nikolayevna Yusupova was an Imperial Russian noblewoman, the only heiress of Russia's largest private fortune of her time. Famed for her beauty and the lavishness of her hospitality, she was a leading figure in pre-Revolutionary Russian society. In 1882, she married Count Felix Felixovich Sumarokov-Elston, who served briefly as General Governor of Moscow Military District (1914–1915). Zinaida is best known as the mother of Prince Felix Yusupov, the murderer of Rasputin. She escaped revolutionary Russia and spent her remaining years living in exile.

Countess Ekaterina Mikhailovna Ribopierre was the wife of diplomat and chief chamberlain Alexander Ivanovich Ribeaupierre, and a cavalry lady of the Order of Saint Catherine and State Lady of the court, and recipient of the Order of Queen Maria Luisa.