Cognomen Richarz (Richarz 
) , across the world, is quite a rare surname. The last name Richarz is habitual in Germany, where it is quite a rare surname, Canada, where it is a very rare surname, and New Zealand. Not in comparison with a country's population, the name is most common in Germany, the United States, and Canada.
| VARIANT | COUNTRY |
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| Richarz | Canada, Germany, France, Poland, United States |
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peter richarz German priest (1783-1855), DE (b. 1783) |
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| franz richarz German psychiatrist, DE (b. 1812) |
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| franz richarz German physicist, DE (b. 1860) |
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| stefan richarz Austrian geologist, DE (b. 1874) |
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| tula richarz DE (b. 1867) |
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| franz richarz (b. 1885) |
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| hermann richarz German priest, DE (b. 1907) |
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| ann richarz DE (b. 1900) |
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| everhard richarz DE (b. 1904) |
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| engelbert richarz (b. 1913) |
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| friedrich-albert richarz German physician, soldier and marineoffizier, DE (b. 1923) |
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| irmintraut richarz German university teacher (1927-2012), DE (b. 1927) |
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| monika richarz German historian, DE (b. 1937) |
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| klaus richarz German zoologist (b. 1948) |
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| claudia richarz DE (b. 1955) |
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