Family name Adolphus (Adolfo 
, Adolphus 
, Adolph ) , all over the world, is a widespread cognomen. The cognomen Adolphus is characteristic of Mexico, where it is quite a common surname, Spain, and Nicaragua (explore the name in all countries). In absolute terms, the name is most common in Mexico, Spain, and Philippines. Likewise, Adolphus is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Adolfo | Italy, Mexico, Spain, Brazil, Argentina |
| Adolphus | Italy, Mexico, Brazil, United States, Philippines |
| Adolph | Italy, Mexico, Spain, Brazil, United States |
| Адольф | Kazakhstan, Ukraine, Belarus, Russia, Azerbaijan |
| iver pedersen adolphus Norwegian priest (b. 1620) |
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| john adolphus English historian (b. 1768) |
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| john leycester adolphus Lawyer, jurist, and author, GB (b. 1795) |
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milton adolphus American pianist and composer (1913-1988), US (b. 1913) |
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| dora emma adolphus (1896-1985) (b. 1896) |
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| james adolphus American cinematographer, US |
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| katie adolphus researcher |
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