Cognomen Nepomuk (Nepomuk 
) , all over the world, is a very rare surname. The cognomen Nepomuk is habitual in Czechia, where it is a rare surname, Germany, where it is a very rare surname, and Spain. More frequently, Nepomuk is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Nepomuk | Germany, Austria, Spain, Hungary, Czechia |
János, Nepomucen, Nepomuceno, Nepomuck, Nepomucký, Népomucène, and Ян
| jános nepomuk, graf esterházy de galántha 1750 - 1778 (b. 1750) |
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| johann nepomuk, graf henckel von donnersmarck 30 Sep 1792 Siemianowitz - 23 Dec 1859 Grambschütz (b. 1792) |
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| johann nepomuk, freiherr tunkl von aschbrunn und hohenstadt 12 Jul 1872 Köszeg, Hungary - 10 May 1915 Onuth, Bukovina in battle (b. 1872) |
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| johann nepomuk, graf podstatzky, freiherr von prussinowitz - 1758 |
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| jános nepomuk, graf hunyady de kéthely 17 Nov 1773 Ürmény - 15 Mar 1821 Wien |
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| joseph wenzel nepomuk, fürst von mansfeld-bornstedt |
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| eduard johann nepomuk, baron mikos de tarrodháza |
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