Cognomen Groleau (Groleau 
) , across the world, is quite a rare family name. The family name Groleau is characteristic of Canada, where it is quite a rare surname, France, and New Zealand. In absolute terms, it is the most numerous in Canada, France, and the United States.
| VARIANT | COUNTRY |
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| Groleau | France, United States, Canada, Indonesia, New Zealand |
| josaphat groleau business person and mayor of the village municipality (1893-1993), CA (b. 1893) |
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| rose c. groleau (b. 1902) |
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françois groleau Canadian ice hockey player, CA (b. 1973) |
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| samuel groleau Canadian ice hockey player, CA (b. 1974) |
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| catherine eve groleau Quebec novelist (b. 1977) |
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| marie-christine groleau researcher |
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| patrice groleau performing artist in Canada |
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| julie groleau Producer |
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| robin r groleau researcher (ORCID 0000-0003-0213-5198) |
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| charles groleau researcher |
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| nicolas groleau Ph.D. Massachusetts Institute of Technology 1992 |
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| danielle groleau researcher (ORCID 0000-0003-2421-9069) |
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| daniel groleau |
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| yves groleau CA |
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| jeremy groleau CA (b. 1999) |
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