37 Caligula becomes Roman Emperor after the death of his great uncle, Tiberius.
37 The Roman Senate annuls Tiberius's will and proclaims Caligula emperor.
37 Roman Emperor Caligula accepts the titles of the Principate, entitled to him by the Senate.
41 Gaius Caesar (Caligula), known for his eccentricity and cruel despotism, is assassinated by his disgruntled Praetorian Guards. Claudius succeeds his nephew.