Atia

Atia (also Atia Balba) (c. 85 – c.43 BC) was the niece of Julius Caesar (through his sister Julia Minor), and mother of Gaius Octavius, who became the Emperor Augustus. Through her daughter Octavia, she was also the great-grandmother of Germanicus and his brother, Emperor Claudius.

Source: Wikipedia — https://en.wikipedia.org/wiki/Atia_(mother_of_Augustus)