"Catherine I (Russian: Екатери́на I Алексе́евна, tr. Yekaterina I Alekseyevna, born Polish: Marta Helena Skowrońska, later known as Marta Samuilovna Skavronskaya; 15 April [O.S. 5 April] 1684 – 17 May [O.S. 6 May] 1727) was the second wife of Peter the Great and Empress of Russia from 1725 until her death." - (en.wikipedia.org 31.01.2020)
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