Surname Summerhays (Summerhays 
) , across the world, is a rare cognomen. The family name Summerhays is habitual in New Zealand, where it is a rare surname, the United States, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Summerhays | Canada, Australia, New Zealand, United Kingdom, United States |
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bruce summerhays professional golfer, US (b. 1944) |
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| bob summerhays American football fullback, linebacker (1927-2017), US (b. 1927) |
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| jane summerhays American actress, US (b. 1944) |
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| gary summerhays Canadian boxer, CA (b. 1950) |
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| robert r. summerhays United States federal judge for the Western District of Louisiana, US (b. 1965) |
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| caleb summerhays researcher (ORCID 0000-0001-7298-5601) |
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| reginald sherriff summerhays Equestrian and author |
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| daniel summerhays professional golfer, US (b. 1983) |
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| ayla summerhays |
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