Page "Julio-Claudian dynasty" Paragraph 18

Although Augustus's succession plans were all but ruined due to the deaths of more than several family members, including many of his own descendants, in the end Tiberius remained faithful to his predecessor's wishes that the next emperor would hail from the Julian side of the Imperial Family.

Thus, on the death of Tiberius, his adopted son, Gaius Julius Caesar Augustus Germanicus, ascended to the throne.

Not only did the new Caesar belong to both the Julii and the Claudii, but he was also a direct descendant of Augustus Caesar as well.

More commonly remembered in history by his childhood nickname Caligula, he was the third Roman Emperor ruling from 37 to 41 AD.