Yevfimiya Rykovskaya
Tchaikovsky Research
Great-great grandmother of the composer (b. 1727), born Yevfimiya Kirkovna Iosifovich (Евфимия Кирковна Иосифови); known after her marriage as Yevfimiya Kirkovna Rykovskaya (Евфимия Кирковна Рыковская).
Yevfimiya was the daughter of Kirik Iosifovich. She married Dmitry Rykovsky (1727–1757), and they had at least two children: Yakov (b. circa 1747); and Anna (b. circa 1752), great-grandmother of the composer.
