Cognomen Welti (Welti 
) , in the world, is quite a rare last name. The last name Welti is habitual in Eswatini, where it is quite a common surname, Switzerland, and Austria, where it is a rare surname. Not in comparison with a country's population, it is commonest in Switzerland, the United States, and Eswatini. Very seldom, Welti is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Welti | Germany, Switzerland, Eswatini, United States, France |
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emil welti member of the Swiss Federal Council (1825-1899), CH (b. 1825) |
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friedrich emil welti Swiss legal historian (1857-1940), CH (b. 1857) |
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emilie welti (1859-1923), CH (b. 1859) |
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albert welti Swiss artist (1862-1912), CH (b. 1862) |
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| johann jakob welti (1828-1900), CH (b. 1828) |
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| oswald welti Swiss illustrator, photographer and printer (1843-1932), CH (b. 1843) |
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albert j. welti Swiss writer and painter (1894-1965), CH (b. 1894) |
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| august welti (1867-1944), CH (b. 1867) |
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| heinrich welti (b. 1859) |
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| carl adolf welti (1871-1951) (b. 1871) |
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| helene welti (b. 1865) |
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| adolf welti Swiss politician (1876-1951), CH (b. 1876) |
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| gustav adolph welti (b. 1867) |
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| charles welti CH (b. 1868) |
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| franz welti Swiss politician (1879-1934), CH (b. 1879) |
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