Surname Mcfaddin (Mcfaddin 
) , around the world, is a rare cognomen. The family name Mcfaddin is characteristic of the United States, where it is a rare surname, Canada, and Australia, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Mcfaddin | Australia, Brazil, Canada, United States |
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william perry herring mcfaddin American rancher, US (b. 1856) |
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| william m. mcfaddin Texan revolutionary (b. 1819) |
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charles dorman mcfaddin sr. American mayor, US (b. 1881) |
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| charles o. mcfaddin American politician, US (b. 1859) |
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| ed f. mcfaddin American lawyer and judge; active in Arkansas, US (b. 1894) |
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| herbert scott mcfaddin Ph.D. Purdue University 1992 |
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| patrick mcfaddin Ph.D. University of Georgia 2016 |
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