Last name Valentinus (Валентин 
, Valentin 
, Valentinus 
) , all around the world, is a widespread family name. The last name Valentinus is characteristic of Seychelles, where it is a common surname, Puerto Rico, and Romania (explore the name in all countries). Not in comparison with a country's population, it is commonest in Mexico, Spain, and Romania. More prevalently, Valentinus is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Валентин | Ukraine, Kazakhstan, France, Russia, Belarus |
| Valentin | Spain, Romania, France, Mexico, Poland |
| Valentinus | United States, Spain, Indonesia, Germany, Brazil |
| Walenty | Argentina, United States, Spain, Poland, Germany |
| iulius valentinus (b. 50) |
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basilius valentinus German alchemist of the 16th–17th century, DE (b. 1394) |
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| junius valentinus Roman politician |
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| marcus aurelius valerius valentinus governor of Numidia in 330 AD |
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| valentinus, engentinus volscus |
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| peter johann olivarius valentinus |
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| lucius arbustius valentinus |
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