Cognomen Connaghan (Connaghan 
) , around the world, is a rare family name. The cognomen Connaghan is characteristic of Ireland, where it is quite a rare surname, Australia, where it is a rare surname, and the United Kingdom. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Ireland.
| VARIANT | COUNTRY |
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| Connaghan | Australia, Ireland, Canada, United States, United Kingdom |
Conaghan, Conahan, Coningham, Cuningham, Cuninghame, Cunningham, Cunninghame, Cunynghame, Каннингем, Каннінгем, and קנינגהם
| denis connaghan Scottish footballer (born 1945), GB (b. 1945) |
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| john connaghan National Director of NHS Delivery, Scottish Government, since 2019 (b. 1954) |
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| denis connaghan association football player (born 1976), GB (b. 1976) |
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| lucile connaghan Wyoming politician |
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| john connaghan researcher |
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