Family name Mrňa (Mrňa 
) , around the globe, is a very rare cognomen. The cognomen Mrňa is habitual in Eastern Europe, particularly Czechia, where it is a rare surname.
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jaroslav mrňa Czech historian, CZ (b. 1983) |
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| františek mrňa CZ (b. 1928) |
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| boris mrňa SK (b. 1932) |
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| ľubomír mrňa SK (b. 1934) |
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| miroslav mrňa Czech businessman, CZ (b. 1946) |
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| dušan mrňa (b. 1962) |
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| libor mrňa CZ (b. 1962) |
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| pavel mrňa Czech ice hockey player, CZ (b. 1988) |
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