Cognomen Mccaughan (Mccaughan 
) , worldwide, is quite a rare family name. The family name Mccaughan is characteristic of New Zealand, where it is quite a rare surname, Ireland, and Australia, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
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| Mccaughan | Australia, Canada, New Zealand, United Kingdom, United States |
| john milton mccaughan (b. 1899) |
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mac mccaughan American musician, US (b. 1967) |
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| ed mccaughan (b. 1950) |
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| chris mccaughan Guitarist, vocalist, US (b. 1977) |
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| m. mccaughan researcher ORCID ID = 0000-0003-2649-3950, US |
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| john mccaughan researcher (ORCID 0000-0002-7593-6685) |
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| conor mccaughan film producer |
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| brian c mccaughan researcher |
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| bridgeen mccaughan researcher |
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| hugh mccaughan researcher |
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| leonie mccaughan recipient of a New Zealand Suffrage Medal 1993, NZ |
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| jennifer a mccaughan researcher (ORCID 0000-0002-4528-7506) |
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| adam n. mccaughan researcher |
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| charles mccaughan American actor, US |
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| dennis joseph mccaughan Ph.D. Australian National University 1972 |
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