Cognomen Du Roi (Du Roi 
) , in the world, is a rare family name. The family name Du Roi is characteristic of Algeria, where it is a rare surname, Morocco, where it is a very rare surname, and Germany.
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johann philipp du roi German physician and botanist (1741-1785), DE (b. 1741) |
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| julius georg paul du roi German jurist (1754-1825), DE (b. 1754) |
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| georg august wilhelm du roi German judge, DE (b. 1787) |
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| hugo du roi DE (b. 1839) |
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