Family name Gruel (Gruell 
, Gruel 
, Gruau 
) , around the globe, is quite a common cognomen. The last name Gruel is habitual in Western Europe, particularly France, where it is quite a rare surname, Austria, and Germany, where it is a rare surname. Measured by absolute frequency, the name is most common in France, Germany, and the United States. Very seldom, Gruel is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gruell | United States, Austria, Poland, Germany, Canada |
| Gruel | Argentina, United States, France, Germany, Canada |
| Gruau | United States, Spain, France, Switzerland, Brazil |
| Gruwel | Germany, Canada, Netherlands, United States |
| georg gruel (b. 1500) |
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| peter gruel (b. 1500) |
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| pierre gruel (b. 1598) |
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| christoph gruel DE (b. 1600) |
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| zacharie gruel FR (b. 1797) |
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| pierre-paul gruel FR (b. 1800) |
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| léon gruel FR (b. 1840) |
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| henri gruel French film director, composer and screenwriter (1923-2007), FR (b. 1923) |
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andrew gruel American chef, US (b. 1980) |
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| patrick gruel French politician, FR (b. 1949) |
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| brigitte gruel French actress, FR (b. 1953) |
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| katherine gruel French archaeologist, FR (b. 1953) |
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| bruno gruel French politician, FR (b. 1965) |
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| gaëtan gruel researcher ORCID ID = 0000-0001-7856-818X (b. 1975) |
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| sophie latron gruel FR (b. 1966) |
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