Surname Garthe (Garthe 
) , globally, is quite a rare cognomen. The cognomen Garthe is habitual in Germany, where it is a rare surname, Norway, and Portugal. In absolute terms, it is the most numerous in Germany, the United States, and Norway. Much less frequently, Garthe is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Garthe | Germany, Norway, Australia, United States, India |
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caspar garthe German physicist (1796-1876), DE (b. 1796) |
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| johannes garthe (b. 1875) |
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| margarethe garthe German painter and sculptor, DE (b. 1891) |
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| erich garthe (b. 1900) |
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| stefan garthe German zoologist, DE (b. 1966) |
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| marc garthe German ice hockey player, DE (b. 1966) |
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| rachel c garthe researcher (ORCID 0000-0002-4954-0484) |
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| ina garthe researcher |
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| nina garthe researcher |
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| greg garthe |
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Mr, Chad, Carl, Barb, Kris, Kyle, Paul, Phil, Ralf, Ruth, Dean, Dave, Dirk, Drew, Gary, Gail, Greg, Grit, Gina, Lars, Leah, Lily, Ayla, Lisa, Adam, Anna, Ms, Jo, Sue, Stu, Bud, Ken, Pat, Pam, Roy, Deb, Lou, Jan, Joi, Tim, Ern, Ine, Uwe, Marc, Mary, Mike, Sara, Anne, and Luca