Cognomen Coolidge (Coolidge 
, קולידג' 
) , globally, is quite a rare surname. The cognomen Coolidge is habitual in Estonia, where it is quite a rare surname, the United States, where it is a rare surname, and Canada. Measured by absolute frequency, it is commonest in the United States, Canada, and Czechia. Very seldom, Coolidge is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Coolidge | Estonia, Canada, Czechia, Australia, United States |
| קולידג' | Israel |
| john coolidge, of watertown (1604-1691), GB (b. 1604) |
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| ensign john coolidge, jr. (1629-1691), GB (b. 1628) |
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| simon coolidge (1632-1693), US (b. 1632) |
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| nathaniel coolidge, sr. (1634-1711), US (b. 1634) |
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| obadiah coolidge (20 Jul 1663 - 16 May 1707), US (b. 1653) |
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| jonathan coolidge US (b. 1646) |
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| hannah coolidge (1657-1698), US (b. 1656) |
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| john coolidge 18th cent. person, US (b. 1690) |
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| obadiah coolidge Peerage person ID=322703, US (b. 1695) |
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joseph coolidge Boston merchant 1747-1820, US (b. 1747) |
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| rebecca coolidge (1699-1754) (b. 1699) |
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| samuel coolidge chaplain of Castle William (b. 1703) |
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| joseph coolidge (1719 - 1771) (b. 1718) |
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| josiah coolidge Peerage person ID=322704, US (b. 1718) |
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joseph coolidge (1773-1840), US (b. 1773) |
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