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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 |
|---|---|
| Porterfield | Canada, New Zealand, United States, United Kingdom, South Africa |