Cognomen Twohig (Twohig 
) , across the world, is quite a rare surname. The family name Twohig is habitual in Ireland, where it is quite a common surname, Australia, where it is a rare surname, and New Zealand. In absolute terms, it is the most numerous in the United States, Ireland, and the United Kingdom.
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| Twohig | United Kingdom, Australia, Ireland, United States, Canada |
| john twohig Irish born Texan banker (b. 1806) |
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james j. twohig politician in Massachusetts, US, US (b. 1886) |
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james joseph twohig jr. politician in Massachusetts, US, US (b. 1908) |
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| daniel s. twohig (1883-1961) (b. 1883) |
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| joseph patrick o'brian twohig British military personnel, GB (b. 1905) |
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| edward twohig Canadian politician, CA |
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| timothy twohig researcher (ORCID 0000-0003-2396-1771) |
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| helen twohig researcher ORCID ID = 0000-0001-8781-1268 |
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| patrick twohig researcher |
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| callum j twohig researcher (ORCID 0000-0002-6588-0227) |
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| katherine a twohig researcher |
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| nicola twohig Association footballer, GB (b. 1987) |
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| michael p twohig |
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| ben twohig British cricketer (1998-), GB (b. 1998) |
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