Surname Jersák (Jersák 
) , throughout the world, is a very rare family name. The cognomen Jersák is habitual in Eastern Europe, particularly Czechia, where it is a rare surname.
| jan jersák CZ (b. 1908) |
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| vilém jersák Czech baptist minister (1919-1994), CZ (b. 1919) |
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| artur jersák SK (b. 1929) |
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| theofil jersák (b. 1951) |
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| jan jersák CZ (b. 1957) |
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