Historic Event Mar 18 Roman Senate annuls Tiberius' will and proclaims Gaius Julius Caesar Augustus Germanicus (aka Caligula = Little Boots) emperor 3rd Roman Emperor Caligula Roman Emperor Tiberius Mar 28 Roman Emperor Gaius Julius Caesar Augustus Germanicus, better known as Caligula (which means "little soldier's boots"), accepts the titles of the Principate, entitled to him by the Senate 31 AD Historical Events by Year 41 AD