Answer
Livia Drusilla had two sons with her first husband Tiberius Claudius Nero: Tiberius and Drusus the Elder. The marriage was not a happy one, and Livia eventually divorced Tiberius and married Octavian, who later became the first Roman emperor. Octavian and Livia had no children together, but Livia adopted her stepsons Tiberius and Drusus as her own. Tiberius eventually succeeded Octavian as emperor, and Drusus died in 9 BC.