drusus

The sculpture is of a man named Drusus Germanicus.

Evidently there's no name written on it, so it was probably catalogued as Drusus Germanicus because somebody thought it looked like the Drusus Germanicus, but they may well have been wrong.

He was rushing to the deathbed of his older brother Drusus after the latter suffered mortal injuries in a freak horse accident.

He was adopted by his great-uncle, Emperor Claudius, becoming Nero Claudius Caesar Drusus Germanicus.

As far as I'm concerned, Germany is a perfectly fitting place for a sculpture of Drusus Germanicus.

The article says the sculpture might actually be Pompey, not Drusus Germanicus.

The son of Drusus Germanicus was the Germanicus, the most famous Germanicus.

Emperor Claudius (brother of the Germanicus and son of Drusus Germanicus) had the name Germanicus as well, but he was probably never in Germania.

If the statue is the Drusus Germanicus I think it is, he was a Roman general and politician who earned the agnomen Germanicus for leading successful military campaigns in Germania.

The subject was named Drusus Germanicus, after all.

Given that the person depicted was originally associated with Drusus Germanicus (the name's a hint here) and Aschaffenburg was in fact part of the Roman Empire back in the day, chances are they found it in the vicinity.

Drusus had long been dead, and of the stepsons Nero survived alone.

The Germanicus inherited that name from his father Drusus.

Complicating the matter, the Germanicus then went on to lead numerous military campaigns in Germania as his father did before him, but he already had the name Germanicus as a child, inherited from his father Drusus.