Drusus the Younger
- the only child of Roman Emperor Tiberius and his first wife, Vipsania Agrippina. Despite his violent temper, Drusus showed promise with both military and politics. In 13 AD, he was made a permanent member of the Senate committee Augustus had founded to draw up the Senate's daily business. However, because Drusus was only related to the Claudian side of the family, rather than both the Julians and Claudians, Augustus forced Tiberius to adopt Germanicus, who was married to Augustus's granddaughter, as his son and heir, removing Drusus from the succession. In 14, after the death of Augustus, Drusus suppressed a mutiny in Pannonia. In 15 he became a consul. He was also governor of Illyricum from 17 to 20. In 21 he was consul again, significantly with his father Tiberius as his colleague, while in 22 he received tribunicia potestas (tribunician power), a distinction reserved solely for the emperor or his immediate successor.By 23 it looked as if Drusus, who made no secret of his antipathy towards Sejanus, would succeed Tiberius as emperor. For reasons of self-survival, but also because he may have had designs on the supreme power, Sejanus needed to remove Drusus. Ancient sources (Tacitus, Suetonius, Cassius Dio) concur that with Livilla as his accomplice he poisoned her husband.