Cognomen Branigan (Branigan 
) , throughout the world, is quite a rare last name. The family name Branigan is habitual in Ireland, where it is quite a rare surname, Australia, where it is a rare surname, and the United Kingdom. Measured by absolute frequency, this name is the most popular in the United States, Ireland, and the United Kingdom. Much less frequently, Branigan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Branigan | Canada, United Kingdom, United States, Ireland, Australia |
| st john branigan police commissioner, NZ (b. 1823) |
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laura branigan American singer (1957-2004), US (b. 1952) |
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| george branigan American baseball player (1905-1966), US (b. 1905) |
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| patrick francis branigan British politician (b. 1906) |
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| james christopher branigan Irish Garda Síochána officer (1910-1986) (b. 1910) |
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| andy branigan Canadian ice hockey player, CA (b. 1922) |
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| don branigan Canadian politician, CA (b. 1933) |
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| keith branigan archaeologist (b. 1940) |
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| edward branigan US (b. 1945) |
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| kate branigan British QC, GB (b. 1961) |
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| amelia r branigan researcher (ORCID 0000-0002-3104-2946) |
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| elizabeth branigan researcher (la trobe university learning & teaching) |
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| timothy branigan researcher |
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| patrick j branigan researcher |
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| holly p branigan Scottish academic |
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