The answer to the crossword for the term 'History of Rome Author' is Livy. Livy was a Roman historian who wrote a monumental history of Rome from its foundation to 9 BC. His work, Ab Urbe Condita Libri (Books from the Foundation of the City), was a major source of Roman history and was widely read in antiquity. Livy's work has been highly influential in modern times, and his style of writing has been praised for its clarity and vividness.