Cognomen Porterfield (Porterfield 
) , in all the world, is quite a common surname. The family name Porterfield is characteristic of the United States, where it is quite a rare surname, New Zealand, where it is a rare surname, and Canada. Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
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| Porterfield | Canada, United Kingdom, United States, South Africa, New Zealand |
| john porterfield Scottish bishop (b. 1501) |
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| alexander porterfield, of porterfield and duchall (1591-1675) (b. 1591) |
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| alexander porterfield of porterfield landowner, slaveholder (1673-1743) (b. 1673) |
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| william porterfield Scottish physician (b. 1696) |
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| katherine porterfield (born 1721) (b. 1721) |
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george a. porterfield Confederate States Army colonel, US (b. 1822) |
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| samuel campbell porterfield (b. 1807) |
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| mary williams porterfield (b. 1807) |
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| alfred porterfield Scottish footballer (b. 1869) |
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bob porterfield American baseball player, US (b. 1923) |
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| wilbur heber porterfield US (b. 1873) |
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| willard merrill porterfield botanist (1893-1966) (b. 1893) |
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eugene porterfield American politician, businessman, US (b. 1946) |
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ian porterfield British footballer (1946–2007), GB (b. 1946) |
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| robert porterfield American actor and director (1905-1971), US (b. 1905) |
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