Cognomen Blackmer (Blackmer 
) , globally, is quite a rare last name. The last name Blackmer is characteristic of the United States, where it is a rare surname, Canada, and New Zealand. Not in comparison with a country's population, the name is most common in the United States, Canada, and the United Kingdom.
| VARIANT | COUNTRY |
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| Blackmer | United Kingdom, Spain, United States, Canada, New Zealand |
| martha blackmer (born 1842) (b. 1842) |
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sidney blackmer American actor (1895-1973), US (b. 1895) |
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| francis augustus blackmer US (b. 1855) |
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| samuel h. blackmer American judge, US (b. 1902) |
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| david e. blackmer American audio engineer, founder of dbx, Inc., US (b. 1927) |
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| donald l. m. blackmer American political scientist (b. 1929) |
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| henry myron blackmer US (b. 1923) |
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matthew blackmer American pair skater, US (b. 1991) |
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| william cole blackmer of Salisbury, N.C. (fl. 1876-1878), US |
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| allison b blackmer researcher (ORCID 0000-0003-3126-4204) |
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| james blackmer researcher |
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