Family name Leche (Leche 
, Letcher 
, Leech ) , globally, is a common cognomen. The last name Leche is habitual in Isle of Man, where it is quite a common surname, Lesotho, and Guernsey (explore the name in all countries). Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Australia. Much less frequently, Leche is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Leche | Lesotho, Canada, United Kingdom, South Africa, United States |
| Letcher, Leech | Australia, Canada, United Kingdom, South Africa, United States |
| Лече | Kazakhstan, Russia, Kyrgyzstan |
| joan leche Benefactress (b. 1450) |
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| thomas leche (b. 1581) |
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| johan leche Finnish botanist (1704-1764), SE (b. 1704) |
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| wilhelm julius leche SE (b. 1757) |
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wilhelm leche Swedish zoologist (1850-1927), SE (b. 1850) |
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| carl leche Swedish translator, SE (b. 1801) |
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| john hurleston leche (1827-1903), GB (b. 1827) |
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pavel leche sport shooter, TR (b. 1887) |
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| enrico delle leche (b. 1828) |
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gunnar leche Swedish architect, SE (b. 1891) |
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richard w. leche American judge and politician (1898-1965), US (b. 1898) |
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| paul leche US jurist, Justice of the Louisiana Supreme Court from 1917 to 1919, and again from 1923 to 1925, US (b. 1857) |
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| sir john hurleston leche (1889-1960), GB (b. 1889) |
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| john leche British diplomat (1889-1960). Counsellor, Embassy, Argentina 1933-1937, Counsellor, Embassy, Spain 1937, Minister, Spain 1937-1939, Minister to the Central American Republics 1939-1945, Ambassador to Chile 1945-1949 (b. 1889) |
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| ernst leche Swedish jurist and district judge, SE (b. 1897) |
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