The "Historia Augusta" says that the emperor Marcus Claudius Tacitus was from the same family as the Latin historian Cornelius Tacitus. (The historian Tacitus lived in the 1st century AD.) The "Historia Augusta" is not correct. In truth, the two men were not from the same family. The "Historia Augusta" also says that the emperor Tacitus's full name in . This is also not correct. In truth, the emperor's name was .