Last name Berthou (Berthou 
) , in the world, is quite a rare cognomen. The cognomen Berthou is habitual in Marshall Islands, where it is quite a common surname, Monaco, and France, where it is quite a rare surname. In absolute terms, it is the most numerous in France, Madagascar, and Denmark. Very seldom, Berthou is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Berthou | Sweden, Denmark, Marshall Islands, Madagascar, France |
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erwan berthou French poet, FR (b. 1861) |
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gwilherm berthou French poet, FR (b. 1908) |
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jean berthou French Catholic priest, FR (b. 1924) |
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jacques berthou French politician, FR (b. 1940) |
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éric berthou road bicycle racer, FR (b. 1980) |
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| xavier berthou French politician, FR (b. 1948) |
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| patrick berthou French rower, FR (b. 1963) |
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| maxime berthou researcher ORCID ID = 0000-0002-2026-4957 |
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| anthony berthou French nutritionist and triathlete, FR (b. 1980) |
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| pierre yves berthou French micropaleontologist, FR |
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| pascal berthou MF |
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| maryvonne berthou |
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| jacques louis berthou, sieur de kerverziou |
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| ségolène berthou |
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| ronan berthou |
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