Cognomen Demartini (Demartini 
) , throughout the world, is quite a rare last name. The family name Demartini is habitual in Italy, where it is quite a rare surname, Czechia, and Argentina. Measured by absolute frequency, it is the most numerous in the United States, Brazil, and Italy. Very seldom, Demartini is the forename as well as the last name.
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| Demartini | Brazil, Italy, Argentina, United States, France |
| hugo demartini Czechoslovak writer, CZ (b. 1880) |
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hugo demartini Czech sculptor and university educator, CZ (b. 1931) |
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| eduard demartini Czech painter, CZ (b. 1892) |
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warren demartini American guitarist, US (b. 1963) |
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anne-emmanuelle demartini historian and professor of contemporary history at the University Paris 13, FR (b. 1966) |
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| joseph f. demartini American watercolor artist (b. 1927) |
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daniele demartini Italian basketball player, IT (b. 1984) |
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| edward demartini zoologist, US (b. 1946) |
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| patricia demartini French speed skater, FR (b. 1950) |
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| john frederick demartini American self-help writer, US (b. 1954) |
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| frank demartini American film producer, US (b. 1962) |
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| marcela adriana demartini AR (b. 1962) |
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| jan demartini CZ (b. 1963) |
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| lenka makovcová demartini CZ (b. 1964) |
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| jeremy demartini researcher ORCID ID = 0000-0003-1333-7166 |
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