Family name Hadfield (Hadfield 
) , all around the world, is quite a common cognomen. The surname Hadfield is habitual in New Zealand, where it is quite a rare surname, the United Kingdom, and Australia. Measured by absolute frequency, it is commonest in the United Kingdom, the United States, and Australia.
| VARIANT | COUNTRY |
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| Hadfield | United Kingdom, Canada, Australia, New Zealand, United States |
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james hadfield British assassin, GB (b. 1771) |
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george hadfield British politician (b. 1787) |
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| william thomas hadfield British painter and collector, FR (b. 1761) |
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| george hadfield American architect, FR (b. 1763) |
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octavius hadfield New Zealand bishop, GB (b. 1814) |
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| william hadfield British writer (b. 1806) |
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robert hadfield British metallurgist, GB (b. 1858) |
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| matthew ellison hadfield English architect (b. 1812) |
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| charles hadfield British journalist (b. 1821) |
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| catherine hadfield (1831-1902) (b. 1831) |
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darcy hadfield New Zealand rower (1889-1964), NZ (b. 1889) |
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| joseph j. hadfield American politician, US (b. 1844) |
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| thomas raleigh hadfield (b. 1836) |
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| charles hadfield (b. 1840) |
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| george hadfield English cricketer (1880-1935), GB (b. 1880) |
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