Polina Semyonovna Zhemchuzhina ; 1897 - 1970) was the wife of Vyacheslav Molotov. Born Pearl Karpovskaya (the word "pearl" in Russian is "жемчужина") to the family of a Jewish tailor in the village of Pologi, in the Yekaterinoslav region (today Dnepropetrovsk Oblast, Ukraine), she joined the Russian Social Democratic Labour Party of Bolsheviks in 1918 and served as a propaganda commissar in the Red Army during the Russian Civil War. Wikipedia
The definitive Wikipedia entry for Polina Zhemchuzhina. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Polina_Zhemchuzhina