What Russian female had siblings Alexander Vorontsov, Elizaveta Vorontsova, and Semyon Vorontsov?
Semyon Vorontsov: Count Semyon Romanovich Vorontsov (Russian: Семён Романович Воронцо́в ; 26 June 1744 – 9 July 1832) was a Russian diplomat from the aristocratic Russian Vorontsov family, whose siblings included Alexander Vorontsov, Elizaveta Vorontsova and Yekaterina Vorontsova-Dashkova.
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