Surname Couldwell (Couldwell 
) , around the world, is a rare cognomen. The surname Couldwell is characteristic of the United Kingdom, where it is a rare surname, Canada, and New Zealand. Measured by absolute frequency, it most frequently occurs in the United Kingdom, Canada, and Australia.
| susan janice couldwell (born 1953) (b. 1953) |
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| sandra lee couldwell (1954-1990) (b. 1954) |
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| william tupper couldwell (born 1955) (b. 1955) |
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| william t couldwell researcher (ORCID 0000-0002-0070-0053) |
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| william blythe couldwell Peerage person ID=597645 |
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| c.m. couldwell engineer and rest home owner in New Zealand |
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| william john couldwell Peerage person ID=597646 |
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| william t. couldwell |
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| william couldwell CA |
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| sandrine marie camille couldwell (born 1991) (b. 1991) |
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| genevieve christine couldwell (born 1993) (b. 1993) |
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