Surname Swarthout (Swarthout 
) , across the world, is quite a rare family name. The surname Swarthout is habitual in the United States, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Swarthout | Canada, United States, Mexico, Philippines, New Zealand |
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m. french swarthout American educator, US (b. 1844) |
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gladys swarthout American singer (1900-1969), US (b. 1900) |
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glendon swarthout 1918-1992 American writer, US (b. 1918) |
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| jack swarthout American football coach, college athletics administrator (1920-2005), US (b. 1920) |
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| howard william swarthout instructor in electrical engineering |
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| john t swarthout researcher |
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| jenna swarthout researcher |
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| todd d swarthout researcher ORCID ID = 0000-0001-5285-7039 |
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| todd swarthout Ph.D. University of Arizona 2002 |
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