History of the Roman Empire from this point on, leading his biographers to label him as insane. Most of what history remembers of Caligula comes from Suetonius, in his book "Lives of the Twelve Caesars". According to Suetonius, Caligula once planned to appoint his favourite horse Incitatus to the Roman Senate. He ordered his soldiers to invade Britain to fight the Sea God Neptune, but changed his mind at the last minute and had them pick sea shells on the northern end of France instead. It is believed he carried on incestuous relations with his three sisters: Julia Livilla, Drusilla and Agrippina the Younger. He
Roman Emperor (Principate) A relatively short-lived dynasty of 30 years, the Flavians confirmed the use of "Caesar" to confirm the hereditary nature of the Imperial dignity (Vespasian gave both his sons this rank, and is said to have informed the Senate that one of his sons would succeed him or no one would). Domitian made himself extremely unpopular by his autocratic manner, which was a departure from the traditional fiction that the Emperor was merely first among equals ("primus inter pares"). Vespasian's wife Flavia Domitilla bore him a daughter (Flavia Domitilla) and two sons (Titus and Domitian). The Nervan-Antonine dynasty was a largely