 When Augustus's chosen successor, Gaius Caesar, died in AD 4, he briefly considered Germanicus as his heir.Livia persuaded him to choose Tiberius, his stepson from Livia's first marriage to Tiberius Claudius Nero, instead.As part of the succession arrangements, Augustus adopted Tiberius on 26 June AD 4, but first required him to adopt Germanicus, thus placing him next in the line of succession after Tiberius.