Family name Forel (Forel 
, Forhana 
, Forelle 
) , worldwide, is quite a rare last name. The family name Forel is habitual in Western Europe, particularly France, where it is quite a rare surname, Switzerland, where it is a rare surname, and Germany. Not in comparison with a country's population, it most frequently occurs in France, Germany, and Philippines. Also, Forel is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Forel | Germany, France, Democratic Republic of the Congo, Philippines, United States |
| Forhana | Philippines, India, United States, United Kingdom |
| Forelle | Germany, France, Canada, Democratic Republic of the Congo, United States |
| Forrel | Brazil, France, United States, United Kingdom |
| jean-philippe griset de forel (1660-1719), CH (b. 1660) |
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| nicolas griset de forel (1661-1737), CH (b. 1661) |
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| joseph griset de forel CH (b. 1701) |
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| charles griset de forel Swiss politician (1787-1860), CH (b. 1787) |
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| alexis forel entomologist (died 1873) (b. 1787) |
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françois-alphonse forel Swiss scientist (1841-1912), CH (b. 1841) |
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| pierre forel French politician (1795-1872), FR (b. 1795) |
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auguste forel Swiss myrmecologist, neuroanatomist and psychiatrist (1848-1931), CH (b. 1848) |
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alexis forel Swiss painter (1852-1922), CH (b. 1852) |
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| françois marie étienne forel (b. 1813) |
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| victor forel (b. 1823) |
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oscar forel Swiss psychiatrist, psychotherapist and photographer (1891-1982), CH (b. 1891) |
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| emmeline forel (1860-1957), CH (b. 1860) |
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| hermine forel holocaust victim, b. 1868-04-01, AT (b. 1868) |
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armand forel Swiss politician (1920-2005), CH (b. 1920) |
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