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Cognomen Janca (Janca ) , all around the world, is quite a rare surname. The cognomen Janca is characteristic of Czechia, where it is quite a common surname, Albania, where it is quite a rare surname, and Serbia. Not in comparison with a country's population, it is commonest in Czechia, the United States, and Serbia. Much less frequently, Janca is the forename as well as the last name.
VARIANT | COUNTRY |
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Janca | Serbia, Poland, United States, Czechia, India |