Cognomen Mcfarling (Mcfarling 
) , throughout the world, is a rare surname. The surname Mcfarling is characteristic of the United States, where it is a rare surname, Canada, and New Zealand. Not in comparison with a country's population, it is commonest in the United States, Canada, and the United Kingdom.
| VARIANT | COUNTRY |
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| Mcfarling | United Kingdom, Australia, United States, Canada, New Zealand |
| usha lee mcfarling science journalist, US (b. 1901) |
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| theodore w. mcfarling American politician, US (b. 1929) |
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| chris mcfarling Green Party candidate in the 2019 United Kingdom General Election |
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| david a mcfarling researcher |
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