Family name Kernohan (Kernohan 
) , throughout the world, is quite a rare last name. The family name Kernohan is characteristic of New Zealand, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and Canada. Measured by absolute frequency, it is commonest in the United Kingdom, the United States, and Canada. Much less frequently, Kernohan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kernohan | United Kingdom, Canada, Australia, New Zealand, United States |
| james watson kernohan American pathologist, US (b. 1896) |
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| robert james kernohan (b. 1919) |
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| liz kernohan Australian politician (1939-2004), AU (b. 1939) |
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| hugh kernohan fencer, GB (b. 1958) |
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| roxanne kernohan actress (1960-1993), CA (b. 1960) |
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| andrew william kernohan (b. 1952) |
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| david kernohan architect and environment court commissioner in New Zealand; MNZM |
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| george kernohan researcher ORCID ID = 0000-0002-1309-446X |
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| david kernohan researcher |
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| hugh kernohan role-playing game designer |
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| angus kernohan Irish rugby union player, GB (b. 1999) |
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