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In the world, Roscislaw (Roscislaw
) is an extremely rare masculine first name. Much more frequently, Roscislaw is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Roscislaw | Canada, Brazil, Poland, United States, United Kingdom |
Machnik, Klubowicz, Jeszczenko, Stepaniuk, Wolkowycki, Chrzanowski, and Marcinkowski