Last name Fontenelle (Fontenelle 
, Fontanelle 
) , across the world, is quite a rare cognomen. The cognomen Fontenelle is habitual in Saint Lucia, where it is a common surname, Barbados, where it is quite a rare surname, and Belgium. Not in comparison with a country's population, this name is the most popular in Brazil, France, and the United States. Very seldom, Fontenelle is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Fontenelle | France, Brazil, United States, Saint Lucia, Belgium |
| Fontanelle | France, Italy, Brazil, United States, United Kingdom |
| desiderius of fontenelle Founder of Fecamp Abbey, FR (b. 700) |
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| anségise de fontenelle Monastic reformer, FR (b. 770) |
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| guy éder de la fontenelle Frenchman convicted of treason, FR (b. 1573) |
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louisa fontenelle Fontenelle, Louisa [known as Mrs Williamson] (1769–1799), actress and singer (b. 1769) |
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logan fontenelle Omaha chief (1825-1855), US (b. 1825) |
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| lucien fontenelle fur trader and explorer, US (b. 1800) |
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| charles claude fontenelle French sculptor, FR (b. 1815) |
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| josé freire bezerril fontenelle Brazilian politician (1850-1926), BR (b. 1850) |
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| rene fontenelle French catholic priest (1894-1957), FR (b. 1894) |
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astrid fontenelle Brazilian journalist, BR (b. 1961) |
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| mário m. fontenelle (1919-1986) (b. 1919) |
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| aluizio fontenelle BR (b. 1913) |
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antônia fontenelle Brazilian actress, BR (b. 1973) |
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giovanna viana fontenelle de araújo Brazilian researcher (ORCID 0000-0002-9747-3159) and wikimedian |
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eduardo assad fontenelle BR |
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