Family name Roundhill (Roundhill 
) , in the world, is a rare cognomen. The surname Roundhill is characteristic of the United Kingdom, where it is a very rare surname, Australia, and Canada. Measured by absolute frequency, this name is the most popular in the United Kingdom, the United States, and Australia.
| VARIANT | COUNTRY |
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| Roundhill | United Kingdom, Canada, United States, Australia |
| bernard roundhill New Zealand painter and commercial artist (1911-2005), NZ (b. 1911) |
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| paul roundhill British artist and writer, GB (b. 1955) |
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| elizabeth ann roundhill researcher |
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| john roundhill Australian Anglican bishop |
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Mr, Peter, David, Linda, Julie, Elton, Helen, Marion, Maggie, Antony, Kevin, Arlene, Aileen, Daniel, Jordan, Thomas, Stephen, Stewart, Charlee, Rebecca, Lindsay, Amanda, Brian, Becca, Barry, Ms, Max, Dan, Guy, Ian, Mick, Sara, Sony, Adam, Kent, Paul, Dale, Jack, John, Emie, Hugh, Marie, Sarah, Susan, Steve, Chris, Heather, and William