Cognomen Knaggs (Knaggs 
) , all over the world, is quite a rare family name. The family name Knaggs is habitual in Trinidad and Tobago, where it is quite a rare surname, the United Kingdom, and Australia. Measured by absolute frequency, this name is the most popular in the United Kingdom, the United States, and Australia.
| VARIANT | COUNTRY |
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| Knaggs | Zimbabwe, Trinidad and Tobago, Australia, United States, United Kingdom |
| thomas knaggs English theologian (b. 1660) |
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henry guard knaggs English entomologist (b. 1832) |
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| samuel knaggs (b. 1829) |
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| samuel thomas knaggs (1842-1921) medical practitioner (b. 1842) |
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| robert clark knaggs (b. 1836) |
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| may stocking knaggs American suffragist, US (b. 1847) |
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| samuel knaggs Trinidad and Tobago civil servant (b. 1856) |
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| henry valentine knaggs British doctor (1859-1954) (b. 1859) |
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| daniel albert knaggs American politician, US (b. 1887) |
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| isabel knaggs crystallographer, ZA (b. 1893) |
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| raymond gerald knaggs (born 1935) (b. 1935) |
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| john r. knaggs (b. 1934) |
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| james knaggs American Salvation Army officer, US (b. 1950) |
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| darlene heather knaggs (born 1966) (b. 1966) |
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| richard john knaggs (born 1968) (b. 1968) |
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