Surname Downham (Downham 
) , in the world, is quite a rare last name. The last name Downham is habitual in Isle of Man, where it is quite a rare surname, the United Kingdom, and New Zealand, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in the United Kingdom, the United States, and Australia.
| VARIANT | COUNTRY |
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| Downham | United Kingdom, South Africa, Australia, United States, Canada |
| william downham English bishop (b. 1511) |
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| amy downham (b. 1950) |
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| jenny downham British writer, GB (b. 1964) |
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| clare downham British historian, GB |
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| george downham (died 1634) |
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| william downham Peerage person ID=670852 |
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| d. y. downham Ph.D. |
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| clare elizabeth downham |
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| james downham |
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| nina downham GB |
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| jack downham British actor, GB |
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