The name Hadrian originates from the Roman cognomen Hadrianus, meaning 'from Hadria' in Latin. Hadria refers to two Roman settlements: the first, modern Adria in northern Italy, was a significant Etruscan port town; the second, modern Atri in central Italy, was named after the northern town. The Adriatic Sea also derives its name from the northern town. The name is historically associated with Publius Aelius Hadrianus, a 2nd-century Roman emperor known for constructing Hadrian's Wall in northern...