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Cognomen Книрш (Книрш ) , worldwide, is a very rare last name. The cognomen Книрш is characteristic of Eastern Europe, particularly Ukraine, where it is a very rare surname.
Knirch, and Knirsh
Юрій, Ганна, Галина, Дмитро, Наталя, Георгій, Катерина, Валентин, and Олександр