Last name Hannay (Hannay 
, 汉纳 
, ハネイ) , in all the world, is quite a rare family name. The surname Hannay is habitual in Isle of Man, where it is quite a rare surname, Uruguay, and New Zealand. Not in comparison with a country's population, it is commonest in the United Kingdom, the United States, and Australia. Much less frequently, Hannay is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Hannay | Canada, Myanmar, Australia, United States, United Kingdom |
| 汉纳 | China |
| هاناي | Iran |
| james hannay presbyterian activist (c. 1600 - c. 1660) (b. 1595) |
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| patrick hannay British writer (b. 1616) |
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| james hannay (1725-1805) (b. 1725) |
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| samuel hannay British Member of Parliament (died 1790) (b. 1742) |
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| alexander hannay IN (b. 1742) |
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| elizabeth hannay (1753-1835) (b. 1753) |
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| david hannay (1755-1823) (b. 1755) |
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| gordon hannay (1758-1761) (b. 1758) |
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| john mcculloch hannay (1761-1761) (b. 1761) |
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| henry hannay (born 1766) (b. 1766) |
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| isabella hannay (born 1768) (b. 1768) |
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| william hannay (born 1770) (b. 1770) |
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| janet hannay (born 1770) (b. 1770) |
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| robert hannay 1772-c.1865 (b. 1772) |
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| margaret hannay (born 1774) (b. 1774) |
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