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In all the world, Koscielniak (Koscielniak ) is a very rare predominantly girly, but very infrequently boy's first name. The forename Koscielniak is habitual in Eastern Asia, particularly China, where it is an extremely rare female name. Very seldom, Koscielniak is the last name as well as the forename.
VARIANT | COUNTRY |
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Koscielniak | Germany, Poland, Czechia, United States, France |