Cognomen Weidlich (Weidlich 
) , globally, is quite a common family name. The cognomen Weidlich is characteristic of Germany, where it is quite a rare surname, Austria, and Bahrain, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Germany, the United States, and Brazil. Much less frequently, Weidlich is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Weidlich | Brazil, United States, South Africa, Germany, Austria |
| michael weidlich (b. 1658) |
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| christoph weidlich German lawyer, DE (b. 1713) |
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| franz weidlich (b. 1735) |
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| ignaz joseph weidlich Bohemian painter, CZ (b. 1753) |
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| ignác weidlich (b. 1753) |
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| heinrich weidlich (1792-1833), AT (b. 1792) |
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| johann weidlich AT (b. 1785) |
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| adolf joseph weidlich Czech painter, CZ (b. 1816) |
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| ludwig weidlich (b. 1807) |
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| adolf weidlich CZ (b. 1817) |
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| pál weidlich Hungarian merchant (b. 1862) |
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| otto weidlich DE (b. 1854) |
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| heinrich arnold emil weidlich (b. 1868) |
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| konrad weidlich (b. 1878) |
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| richard weidlich DE (b. 1878) |
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