(c. 26-61 A.D.) of the Iceni tribe is regarded as one of Britain's greatest heroines. Caligula Image source Known for his eccentricity, cruelty and immorality, Caligula humiliated the Senate by appointing his beloved stallion, Incitatus, as Consul; engaged in incestuous relationship with his sister, Drusilla, and had her disembowelled when she