Prince Felix Yusupov by Linse. The Yusupovs were the wealthiest family in Russia. They owned dozens of estates and palaces and Prince Felix Yusupov was married to the niece of Tsar Nicholas II, Irina Alexandrovna. The prince is best remembered for his involvement in the murder of the mad monk Rasputin in the Yusupov family’s palace in St Petersburg. He was able to escape to Paris in 1917, taking many fine family jewels.