Antonia the Elder was a niece of the first Roman emperor, Augustus, being the eldest daughter of Octavia the Younger and her second husband, the Triumvir Mark Antony. She married Lucius Domitius Ahenobarbus and became the paternal grandmother of the emperor Nero.

Octavia the Younger was the elder sister of the first Roman emperor, Augustus, the half-sister of Octavia the Elder, and the fourth wife of Mark Antony. She was also the great-grandmother of the Emperor Caligula and Empress Agrippina the Younger, maternal grandmother of the Emperor Claudius, and paternal great-grandmother and maternal great-great-grandmother of the Emperor Nero.