Last name Claffey (Claffey 
) , all around the world, is quite a rare cognomen. The cognomen Claffey is habitual in Ireland, where it is quite a common surname, Australia, where it is a rare surname, and United Arab Emirates. Not in comparison with a country's population, the name is most common in the United States, Ireland, and the United Kingdom.
| VARIANT | COUNTRY |
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| Claffey | United Kingdom, Australia, Ireland, United States, Canada |
| daniel claffey cricketer (1869-1924), NZ (b. 1869) |
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| úna claffey Irish former journalist and political adviser, IE (b. 1947) |
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| patrick claffey IE (b. 1951) |
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| carol claffey GB (b. 1954) |
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| niall claffey Irish hurler, IE (b. 1978) |
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| vinny claffey Gaelic football player, IE |
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| aisling claffey researcher (ORCID 0000-0002-0163-7789) |
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| andrew j claffey researcher |
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| b claffey researcher |
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| michelle claffey Irish rugby union player, IE (b. 1987) |
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