Family name Harrington (Harrington 
, Хэррингтон 
, ハリントン, and others...) , all over the world, is a common cognomen. The surname Harrington is characteristic of Ireland, where it is quite a common surname, Isle of Man, and the United States (explore the name in all countries). Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and Australia. Much less frequently, Harrington is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Harrington | Australia, Canada, Ireland, United Kingdom, United States |
| Хэррингтон, Харрингтон | Russia |
| הרינגטון | Israel |
Arrington, Harington, Гаррінгтон, Харрінгтон, and แฮร์ริงตัน
| john harrington English knight, died 1359 (b. 1304) |
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| nicholas harrington English soldier and politician (b. 1345/6, d. in or before 1404) (b. 1346) |
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| william harrington English knight, died 1440 (b. 1350) |
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| william harrington English soldier (b. 1392) |
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| thomas harrington English knight, died 1460 (b. 1400) |
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| james harrington English supporter of the House of York (b. 1430) |
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| robert harrington (b. 1450) |
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james harrington English political theorist of classical republicanism, GB (b. 1611) |
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| william harrington English Jesuit priest and Roman Catholic martyr, GB (b. 1566) |
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| john harrington English politician, died 1654 (b. 1589) |
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| elizabeth harrington (died 1686) (b. 1611) |
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| elizabeth harrington (b. 1605) |
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| robert harrington (1 Oct 1616 - certain 11 May 1707) (b. 1616) |
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| john harrington English politician, died 1700 (b. 1627) |
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| benjamin harrington (26 Jan 1662 - certain 27 Mar 1724) (b. 1662) |
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