Cognomen Grothaus (Grothaus 
) , all around the world, is quite a rare surname. The family name Grothaus is characteristic of Germany, where it is quite a rare surname, Austria, and Israel, where it is a rare surname. Measured by absolute frequency, the name is most common in Germany, the United States, and Austria.
| VARIANT | COUNTRY |
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| Grothaus | United Kingdom, Austria, Israel, Germany, United States |
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ernst philipp von grothaus (1703-1776) (b. 1703) |
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eleonore von grothaus German noblewoman writer and poetess, DE (b. 1734) |
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karl von grothaus DE (b. 1747) |
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| nikolaus anton heinrich julian von grothaus (b. 1743) |
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| august grothaus (b. 1812) |
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| julia ellen grothaus librarian, US (b. 1886) |
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| wilhelm grothaus DE (b. 1893) |
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michael grothaus Journalist (b. 1977) |
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| hans grothaus DE (b. 1927) |
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| gisela grothaus Canoe racer, DE (b. 1955) |
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| martin grothaus Ph.D. Universität Bielefeld 1998 |
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| mechtild von grothaus |
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| albert gabriel grothaus DE |
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| gertrud cornelia von grothaus |
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| johann von grothaus |
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