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Worldwide, Katerynych (Катеринич , Katerynych ) is an extremely rare masculine forename. Much more frequently, Katerynych is the last name as well as the forename.
Катериныч, and Катерыныч
Amy, Jan, Jeff, Casey, David, Maksym, Rachel, Darren, Lenard, Janice, Cynthia, Liudmyla, and Oleksandr