Cognomen Gradl (Gradl 
) , throughout the world, is quite a rare last name. The last name Gradl is habitual in Austria, where it is quite a rare surname, Germany, and Czechia, where it is a rare surname. Not in comparison with a country's population, it is commonest in Germany, Austria, and the United States.
| VARIANT | COUNTRY |
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| Gradl | Austria, Germany, Italy, Czechia, United States |
| vendelín gradl CZ (b. 1787) |
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| wendelin gradl (b. 1788) |
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hermann gradl German illustrator and painter (1883-1964), DE (b. 1883) |
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| heinrich gradl Bohemian historian and archivist (1842-1895), CZ (b. 1842) |
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johann baptist gradl Member of the German Bundestag (1904-1988), DE (b. 1904) |
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| johann evangelist gradl (b. 1863) |
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| max joseph gradl German painter and jewelry designer, DE (b. 1873) |
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| thessa gradl DE (b. 1867) |
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| georg gradl German politician (1884-1950), DE (b. 1884) |
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| franz gradl CZ (b. 1876) |
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| michael gradl DE (b. 1879) |
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| hans gradl German officer and Knight's Cross recipient, US (b. 1903) |
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| maria renata gradl holocaust victim, b. 1908-01-12, AT (b. 1908) |
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| josef gradl German politician, DE (b. 1921) |
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| josef gradl AT (b. 1914) |
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