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In the world, Wieczyński (Wieczyński ) is an extremely rare unknown gender forename. Much more frequently, Wieczyński is the last name as well as the forename.
Wieczynski
Artur, Kamil, Piotr, Rafał, Jerzy, Filip, Patryk, Tomasz, Mariusz, Miłosz, Andrzej, Bartosz, Dominik, Łukasz, Radosław, and Krzysztof