Suetonius

Gaius Suetonius Tranquillus, commonly known as Suetonius, was a Roman historian, administrator, and writer belonging to the equestrian order in the early Imperial era. His most important surviving work is The Twelve Caesars, a set of biographies of twelve successive Roman rulers, from Julius Caesar to Domitian. Other works by Suetonius concern the daily life of Rome, politics, oratory, and the lives of famous writers, including poets, historians, and grammarians. A few of these books have partially survived, but many have been lost.