Julia (c. 130 BC - 69 BC) was a daughter of praetor Gaius Julius Caesar II (grandfather of Caesar) and Marcia (daughter of praetor Quintus Marcius Rex). She was a sister of Gaius Julius Caesar III (the father of Julius Caesar) and Sextus Julius Caesar III, consul in 91 BC.
According to Plutarch, it was by marrying her, a patrician woman, that the upstart Marius got the attention of the snobbish Roman Senate and launched his political career. Julia is remembered as a virtuous woman devoted to her husband and their only child. Her reputation alone permitted her to keep her status, even after Sulla's persecutions against Marius himself and his allies.
When quaestor, he pronounced the customary orations from the rostra in praise of his aunt Julia and his wife Cornelia, who had both died. And in the eulogy of his aunt he spoke in the following terms of her paternal and maternal ancestry and that of his own father: "The family of my aunt Julia is descended by her mother from the kings, and on her father's side is akin to the immortal Gods; for the Marcii Reges (her mother's family name) go back to Ancus Marcius, and the Julii, the family of which ours is a branch, to Venus. Our stock therefore has at once the sanctity of kings, whose power is supreme among mortal men, and the claim to reverence which attaches to the Gods, who hold sway over kings themselves."