Count Felix Sumarokov-Elston, Prince Youssoupoff, Grand Duchess Maria Pavlona, Grand Duke Vladimir,
Count Felix Sumarokov-Elston, Prince Youssoupoff, Grand Duchess Maria Pavlona, Grand Duke Vladimir, and Princess Zenaida Yousosupoff -- source link
#romanov#yusupov#yussupov#youssoupoff#youssoupov