Family name Gerretsen (Gerretsen 
) , across the world, is a rare surname. The cognomen Gerretsen is characteristic of Netherlands, where it is quite a rare surname, Belgium, where it is a rare surname, and South Africa. In absolute terms, it is commonest in Netherlands, the United States, and South Africa. Very seldom, Gerretsen is the forename as well as the last name.
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| Gerretsen | South Africa, Canada, United States, Netherlands, Democratic Republic of the Congo |
| martinus wilhelmus gerretsen NL (b. 1848) |
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| jan h. gerretsen Dutch theologian (1867-1923), NL (b. 1867) |
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chas gerretsen Dutch photographer, NL (b. 1943) |
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| huub gerretsen Dutch artist, NL (b. 1897) |
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| frederik charles gerretsen NL (b. 1889) |
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| johan gerretsen Dutch university teacher, NL (b. 1907) |
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| frederik gerretsen (b. 1899) |
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| john gerretsen Canadian politician, CA (b. 1942) |
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| mark gerretsen Canadian politician, CA (b. 1975) |
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| philip gerretsen researcher |
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| eveline c f gerretsen researcher |
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| sjoerd gerretsen Dutch field hockey player (1987-), NL (b. 1987) |
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| marc gerretsen NL |
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| peter gerretsen |
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| peter gerretsen |
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