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Across the world, Sylweriusz (Sylweriusz ) is a very rare boy's first name. The first name Sylweriusz is habitual in Eastern Europe, particularly Poland, where it is a rare masculine name. More prevalently, Sylweriusz is the last name as well as the forename.
Bak, Kuran, Krlak, Kalita, Nickel, Fidura, Adynowski, Pokropek, Krajewski, Pawlowski, Paczkowski, Wawrzyniak, and Korytkowski