Cognomen Cavenagh (Cavenagh 
) , throughout the world, is a rare surname. The surname Cavenagh is habitual in Australia, where it is a rare surname, New Zealand, where it is a very rare surname, and the United Kingdom. In absolute terms, the name is most common in Australia, the United States, and the United Kingdom.
| VARIANT | COUNTRY |
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| Cavenagh | United Kingdom, Australia, United States, Canada, Brazil |
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william orfeur cavenagh British Indian Army general, GB (b. 1820) |
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| george cavenagh (1808-1869) journalist (b. 1808) |
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| george cavenagh Australian cricketer (1836-1922), AU (b. 1836) |
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| f. a. cavenagh (b. 1884) |
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| francis alexander cavenagh (b. 1884) |
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| winifred cavenagh British criminologist, social scientist and academic (b. 1908) |
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| sandy cavenagh GP obstetrician (b. 1929) |
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| sarah cavenagh (born 1964) (b. 1964) |
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| thomas cavenagh (born 1966), GB (b. 1966) |
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| bettina cavenagh (born 1971) (b. 1971) |
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| alastair cavenagh GB (b. 1964) |
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| john cavenagh (died 2003) |
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| thomas cavenagh Peerage person ID=592882 |
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| bridget elizabeth cavenagh Peerage person ID=380421 |
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| tom cavenagh researcher |
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Mr, Jack, John, Nick, Neva, Maria, Marie, Mandy, Sarah, Simon, Susan, Susie, Chris, Clare, Katie, Kevin, Peter, David, Diana, Gerry, Laura, Linda, Jane, Janet, Greg, Ryan, Ms, Ed, Sam, Ben, Ken, Pat, Rob, Jon, Tom, Tim, Mair, Mike, Sean, Alex, Anne, Abby, Adam, Chad, Carl, Kate, Paul, Dean, and James