Cognomen Ely (Ely 
, אלי 
, エリー 
, and others...) , around the globe, is a common surname. The surname Ely is characteristic of Mauritania, where it is quite a common surname, Honduras, and Venezuela, where it is quite a rare surname. Measured by absolute frequency, it is commonest in the United States, Indonesia, and Brazil. More prevalently, Ely is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ely | Philippines, Brazil, Bolivia, United States, Indonesia |
| אלי | Israel |
| エリー | Japan |
| Эли | Kazakhstan, Kyrgyzstan, Tajikistan, Russia, Ukraine |
| 埃利 | China |
| إلي | Egypt, Iraq |
| Элий | Russia, Kazakhstan |
| nicholas of ely Bishop of Worcester; Bishop of Winchester; Lord Chancellor of England; Lord High Treasurer of England; Archdeacon of Ely (b. 1250) |
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| reginald ely English Gothic architect (fl.1438–71) (b. 1438) |
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| william ely English divine (b. 1501) |
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| nathaniel ely founding settler of Hartford and Norwalk, Connecticut, US (b. 1605) |
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| samuel ely Massachusetts landowner (1639-1692) (b. 1639) |
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| joseph ely (20 Aug 1663 - certain 29 Apr 1755) (b. 1663) |
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| samuel ely 21 Oct 1686 - (b. 1686) |
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| mary ely (25 Feb 1689 - certain 9 Apr 1770) (b. 1689) |
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| jonathan ely (b. 1683) |
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| john ely (1707-1795) (b. 1707) |
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| thomas ely (born 1713) (b. 1713) |
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| elizabeth ely 1715 - 1790 (b. 1715) |
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| zebiah ely 22 Sep 1726 - 26 Sep 1808 Granby (b. 1726) |
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elisha ely American judge & politician (1784-1854), US (b. 1784) |
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ezra stiles ely American pastor, US (b. 1786) |
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