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Surname Siejk (Siejk
) , in the entire world, is a rare family name. The cognomen Siejk is habitual in Poland, where it is a rare surname, Ireland, and the United States, where it is an extremely rare surname. Also, Siejk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siejk | United States, Poland, Ireland |