Drusus Julius Caesar
After the death of his son Drusus Julius Caesar in AD 23, Tiberius became more reclusive and aloof. In 26 AD he removed himself from Rome and left administration largely in the hands of his controversial praetorian prefects Sejanus and Naevius Sutorius Macro. When Tiberius died, he was succeeded by his grand-nephew and adopted grandson, Caligula.