Cognomen Callanan (Callanan 
) , around the world, is quite a rare surname. The last name Callanan is habitual in Ireland, where it is quite a common surname, Australia, where it is quite a rare surname, and New Zealand, where it is a rare surname. Measured by absolute frequency, the name is most common in the United States, Ireland, and Australia.
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| Callanan | United Kingdom, South Africa, Australia, Ireland, United States |
| jeremiah joseph callanan Irish poet (b. 1795) |
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| martha callanan 19th and 20th-century American women's suffragist activist (b. 1826) |
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| james j. callanan Canadian politician, CA (b. 1842) |
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| michael callanan Canadian politician (1849-1929), CA (b. 1849) |
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| ellen callanan (1880-1947) Australian Loreto Sister and educator, AU (b. 1880) |
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| john joe callanan Irish hurler, IE (b. 1894) |
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| eugene callanan Irish Gaelic footballer (b. 1898) |
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| fionnbar callanan Irish photographer, IE (b. 1901) |
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| constance irene callanan (1909-1978) (b. 1909) |
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| johnny callanan Irish politician, IE (b. 1910) |
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martin callanan British politician (born 1961), GB (b. 1961) |
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| peter callanan Irish politician, IE (b. 1935) |
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séamus callanan Irish hurler, IE (b. 1988) |
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| patrick callanan (b. 1934) |
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| joe callanan Irish politician, IE (b. 1949) |
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