Cognomen Toniak (Toniak 
) , in the entire world, is a very rare last name. The last name Toniak is habitual in Poland, where it is a rare surname, Canada, where it is an extremely rare surname, and the United States. Also, Toniak is the forename as well as the last name.
| józef toniak Polish Righteous Among the Nations, PL (b. 1906) |
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| karolina toniak PL (b. 1906) |
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| ewa toniak Polish art historian, PL (b. 1960) |
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