Augustus child Lucius Caesar
Death and succession
The illness of Augustus in 23 BC brought the problem of succession to the forefront of political issues and the public. To ensure stability, he needed to designate an heir to his unique position in Roman society and government. This was to be achieved in small, undramatic and incremental ways that did not stir senatorial fears of monarchy. If someone was to succeed to Augustus's unofficial position of power, he would have to earn it through his own publicly proven merits.Some Augustan historians argue that indications pointed toward his sister's son Marcellus, who had been quickly married to Augustus's daughter Julia the Elder. Other historians dispute this since Augustus's will was read aloud to the Senate while he was seriously ill in 23 BC, indicating a preference for Marcus Agrippa, who was Augustus's second in charge and arguably the only one of his associates who could have controlled the legions and held the empire together.After the death of Marcellus in 23 BC, Augustus married his daughter to Agrippa. This union produced five children, three sons and two daughters: Gaius Caesar, Lucius Caesar, Vipsania Julia, Agrippina, and Agrippa Postumus, so named because he was born after Marcus Agrippa died. Shortly after the second settlement, Agrippa was granted a five-year term of administering the eastern half of the empire with the imperium of a proconsul and the same tribunicia potestas granted to Augustus (although not trumping Augustus's authority), his seat of governance stationed at Samos in the eastern Aegean. This granting of power showed Augustus's favor for Agrippa, but it was also a measure to please members of his Caesarian party by allowing one of their members to share a considerable amount of power with him.Augustus's intent became apparent to make Gaius and Lucius Caesar his heirs when he adopted them as his own children. He took the consulship in 5 and 2 BC so that he could personally usher them into their political careers, and they were nominated for the consulships of AD 1 and 4. Augustus also showed favor to his stepsons, Livia's children from her first marriage Nero Claudius Drusus Germanicus (henceforth referred to as Drusus) and Tiberius Claudius (henceforth Tiberius), granting them military commands and public office, though seeming to favor Drusus. After Agrippa died in 12 BC, Tiberius was ordered to divorce his own wife Vipsania Agrippina and marry Agrippa's widow, Augustus's daughter Julia—as soon as a period of mourning for Agrippa had ended. Drusus's marriage to Augustus's niece Antonia was considered an unbreakable affair, whereas Vipsania was "only" the daughter of the late Agrippa from his first marriage.Tiberius shared in Augustus's tribune powers as of 6 BC but shortly thereafter went into retirement, reportedly wanting no further role in politics while he exiled himself to Rhodes. No specific reason is known for his departure, though it could have been a combination of reasons, including a failing marriage with Julia as well as a sense of envy and exclusion over Augustus's apparent favouring of his young grandchildren-turned-sons Gaius and Lucius. (Gaius and Lucius joined the college of priests at an early age, were presented to spectators in a more favorable light, and were introduced to the army in Gaul.)After the deaths of both Lucius and Gaius in AD 2 and 4 respectively, and the earlier death of his brother Drusus (9 BC), Tiberius was recalled to Rome in June AD 4, where he was adopted by Augustus on the condition that he, in turn, adopt his nephew Germanicus. This continued the tradition of presenting at least two generations of heirs. In that year, Tiberius was also granted the powers of a tribune and proconsul, emissaries from foreign kings had to pay their respects to him and by AD 13 was awarded with his second triumph and equal level of imperium with that of Augustus.
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