Agrippa Postumus, Roman son of Marcus Vipsanius Agrippa and Julia the Elder (died 14)

Marcus Agrippa Postumus, later named Agrippa Julius Caesar, was a grandson of Roman Emperor Augustus. He was the youngest child of Marcus Vipsanius Agrippa and Julia the Elder. Augustus initially considered Postumus as a potential successor and formally adopted him as his heir, before banishing Postumus from Rome in AD 6 on account of his ferocia. In effect, though not in law, the action cancelled his adoption and virtually assured Tiberius' emplacement as Augustus' sole heir. Postumus was ultimately executed by his own guards shortly after Augustus' death in AD 14.

Marcus Vipsanius Agrippa was a Roman general, statesman and architect who was a close friend, son-in-law and lieutenant to the Roman emperor Augustus. Agrippa is well known for his important military victories, notably the Battle of Actium in 31 BC against the forces of Mark Antony and Cleopatra. He was also responsible for the construction of some of the most notable buildings of his era, including the original Pantheon.

Julia the Elder, known to her contemporaries as Julia Caesaris filia or Julia Augusti filia, was the daughter and only biological child of Augustus, the first Roman emperor, and his second wife, Scribonia. Julia was also stepsister and second wife of the Emperor Tiberius; maternal grandmother of the Emperor Caligula and the Empress Agrippina the Younger; grandmother-in-law of the Emperor Claudius; and maternal great-grandmother of the Emperor Nero. Her epithet "the Elder" distinguishes her from her daughter, Julia the Younger.