Last name Defty (Defty 
) , all over the world, is a rare surname. The last name Defty is habitual in Benin, where it is a rare surname, the United Kingdom, and Australia, where it is a very rare surname. In absolute terms, it is the most numerous in the United Kingdom, Benin, and the United States.
| VARIANT | COUNTRY |
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| Defty | United Kingdom, South Africa, Australia, United States, Benin |
| andrew defty British historian, sociologist and politologist, GB (b. 1970) |
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| andrew defty researcher ORCID ID = 0000-0001-7627-003X |
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