Cognomen L'Heureux (L'Heureux 
) , worldwide, is quite a rare last name. The last name L'Heureux is habitual in Canada, where it is quite a rare surname, Bermuda, and New Zealand. Measured by absolute frequency, it is commonest in Canada, the United States, and France. Much less frequently, L'Heureux is the forename as well as the last name.
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| L'Heureux | Belgium, United States, Canada, France, Democratic Republic of the Congo |
| jean l'heureux FR (b. 1540) |
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| henricus franciscus dominicus l'heureux politician (b. 1753) |
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elise l'heureux Canadian photographer, CA (b. 1827) |
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| jean-baptiste l'heureux Canadian interpreter, CA (b. 1831) |
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| marcel l'heureux (b. 1865) |
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| eugène l'heureux birthdate: 1893 deathdate: 1975 viaf: 282507587 (b. 1893) |
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| yvon l'heureux Canadian politician, CA (b. 1914) |
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| claire l'heureux-dubé Canadian judge, CA (b. 1927) |
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| jacques l'heureux lawyer and university professor, CA (b. 1933) |
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| john l'heureux American writer, US (b. 1934) |
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| nicole l'heureux university professor (b. 1934) |
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| bob l'heureux American politician, US (b. 1940) |
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| gaston l'heureux Canadian actor and television presenter (1943-2011), CA (b. 1943) |
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| christine l'heureux Canadian writer and publisher, CA (b. 1946) |
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| conrad e. l'heureux (b. 1938) |
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