Surname Kefford (Kefford 
) , in the world, is a rare last name. The family name Kefford is characteristic of Isle of Man, where it is quite a rare surname, Australia, and the United Kingdom, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in the United Kingdom, Australia, and the United States. Much less frequently, Kefford is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kefford | United Kingdom, Canada, Australia, France, United States |
| thomas kefford English clockmaker (b. 1680) |
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ace kefford British musician, GB (b. 1946) |
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| carol kefford senior British Army nurse (b. 1957) |
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| alistair kefford researcher |
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| ben j. kefford researcher |
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| bruce kefford researcher (animal plant & soil sciences) |
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| richard f. kefford researcher |
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