Cognomen Granby (Granby 
) , throughout the world, is a rare last name. The last name Granby is characteristic of Northern Europe, particularly Norway, where it is a rare surname, Ireland, and the United Kingdom. In absolute terms, it is commonest in the United States, the United Kingdom, and Norway. Very seldom, Granby is the forename as well as the last name.
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| Granby | Ireland, Canada, United Kingdom, United States, Norway |
| granby thomas calcraft British politician and Army officer, GB (b. 1770) |
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| granby calcraft British Member of Parliament (1802-1855), GB (b. 1802) |
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| granby james burke (1850-1935) (b. 1850) |
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| joseph granby actor (1885–1965), US (b. 1885) |
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| rut granby botanist (b. 1938) |
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| charles granby (b. 1934) |
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| john granby football player (born 1968) (b. 1968) |
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| jane granby American artist, US (b. 1975) |
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| charlie granby director and filmmaker |
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| martine n. granby academic |
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| chuck granby college basketball player (1959–1960) Bradley |
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| kit granby researcher |
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| ben granby (b. 1975) |
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