Surname Trefry (Trefry 
) , in the world, is a rare last name. The family name Trefry is habitual in Canada, where it is a rare surname, Australia, and New Zealand. In absolute terms, the name is most common in the United States, Canada, and Australia.
| VARIANT | COUNTRY |
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| Trefry | Canada, United Kingdom, United States, New Zealand, Australia |
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richard trefry United States Army general, US (b. 1924) |
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raymond h. trefry politician in Massachusetts, US, US |
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| christine trefry Australian sports shooter, AU (b. 1955) |
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| sharonlee trefry researcher (ORCID 0000-0002-0034-0545) |
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| thomas trefry 1388 |
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| roger trefry - 1391 |
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| john trefry researcher |
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| thomas trefry, of fowey Trefry, Cornwall - 20 Jan 1475 |
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| jennet trefry - Aft 1518 |
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| thomas trefry, of fowey Fowey, Cornwall - 31 Jan 1563 |
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| agnes trefry |
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