The name Nero is a boy's name of Latin origin meaning "stern". Nero and is often added to lists like Cool Boy Names From Ancient Cultures and discussed in our forums with posts like "Harry Potter House Sorting Name Game".
From the experts:
The association with the infamous Nero, the fiddling Roman emperor, would be unavoidable. But there was also the detective Nero Wolfe, hero of many mystery stories.
Nero was born Lucius Domitius Ahenobarbus, and Lucius might be a preferable choice if you know anything about ancient Roman history.