Family name Cosby (Cosby 
, كوسبي) , around the globe, is a common surname. The surname Cosby is characteristic of Guam, where it is quite a common surname, the United States, where it is quite a rare surname, and Ghana. Measured by absolute frequency, it most frequently occurs in the United States, Ghana, and the United Kingdom. Very seldom, Cosby is the forename as well as the last name.
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| Cosby | United Kingdom, Ghana, United States, Canada, Democratic Republic of the Congo |
| francis cosby English soldier (b. 1510) |
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| alexander cosby Irish planter, sheriff of Queen's county (b. 1547) |
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| alexander cosby (1610-1636) (b. 1610) |
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| francis cosby (born 1612) (b. 1612) |
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| sydney cosby (born 1613) (b. 1613) |
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william cosby British military officer, governor of the province of New York, US (b. 1690) |
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| anne cosby (born 1667) (b. 1667) |
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| elizabeth cosby (1669-1739) (b. 1669) |
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| jane cosby (born 1670) (b. 1670) |
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| henry cosby (1673-1705) (b. 1673) |
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| alexander cosby Canadian politician, CA (b. 1680) |
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| dorcas cosby (born 1683) (b. 1683) |
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| celia cosby (1687-1733) (b. 1687) |
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| sarah cosby (1700-1755) (b. 1700) |
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| elizabeth cosby Peerage person ID=490290 (b. 1701) |
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