Roman Historian is a term used to describe a group of authors who wrote about the history of the Roman Empire. Tacitus (7 letters) was a senator and historian who wrote about the Roman Empire in the 1st century AD. Livy (4 letters) was a historian who wrote a monumental history of Rome from its foundation to 9 BC. CATO (4 letters) was a statesman and historian who wrote about the Roman Republic in the 2nd century BC. Nepos (5 letters) was a biographer and historian who wrote about the Roman Republic in the 1st century BC. Pliny (5 letters) was a naturalist and historian who wrote about the Roman Empire in the 1st century AD. Suetonius (9 letters) was a biographer and historian who wrote about the Roman Empire in the 2nd century AD.