Cognomen Holwell (Holwell 
, Holh 
) , globally, is a rare last name. The last name Holwell is habitual in New Zealand, where it is a rare surname, Canada, and the United Kingdom. Measured by absolute frequency, this name is the most popular in the United Kingdom, the United States, and Canada.
| VARIANT | COUNTRY |
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| Holwell | United Kingdom, Canada, Australia, New Zealand, United States |
| Holh | Brazil, United States, Honduras, Thailand |
| michael holwell (b. 1618) |
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| john holwell mathematician and astrologer (b. 1649) |
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john zephaniah holwell English surgeon and temporary Governor of Bengal (1711-1798), GB (b. 1711) |
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| _ holwell daughter of English astrologer John Holwell (b. 1670) |
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| zephaniah holwell (b. 1670) |
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william holwell carr English art dealer, art collector and painter (1750-1830), GB (b. 1750) |
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| william holwell English cleric (b. 1726) |
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| lieut. col. james holwell (1746-1807) (b. 1746) |
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| sally holwell (b. 1738) |
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| henrietta emilia holwell (b. 1741) |
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| maj. john zephaniah holwell (b. 1770) |
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| john zephaniah holwell 1787- (b. 1787) |
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| benjamin holwell (b. 1788) |
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| dr. benjamin edward holwell (b. 1817) |
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| sarah labron holwell (b. 1851) |
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