 The Yusupovs, a family of Crimean Tatars origin, were very wealthy, having acquired their vast fortune generations earlier.Their properties included four palaces in St. Petersburg, three palaces in Moscow, 37 estates in different parts of Russia (Kursk, Voronezh and Poltava).They owned more than 100,000 acres (400 km²) of land and their industries included sugarbeet factories, brick plants, saw-mills, textile and cardboard factories, iron-ore mines, flour mills, distilleries and oil fields on the Caspian Sea.