Cognomen Claudianus (Claudianus 
) , across the world, is a very rare family name. The last name Claudianus is characteristic of Tanzania, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Also, Claudianus is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Claudianus | France, Tanzania, United Kingdom, United States |
| marcus junius claudianus Roman commander in Britannia (b. 50) |
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| t. flavius claudianus Roman military diplomat (b. 150) |
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| claudius epaphroditus claudianus Roman military tribune (b. 250) |
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| marcus arruntius claudianus Roman senator during the reigns of Domitian and Trajan |
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| marcus valerius bradua claudianus Roman suffect consul 172 AD |
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| tiberius claudius claudianus Roman prefect in Britannia in the 240s AD |
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| marcus aurelius claudianus |
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