Julia Drusilla (daughter of Caligula)

Named after her late aunt and her father's favorite sister, Julia Drusilla, Julia was born not long after Caligula married Caesonia (some sources have her being born on the same day as the marriage). The date of her parents' marriage has not been determined for certain, but it is known that it was sometime in the summer of AD 39.[2] When Drusilla, as the child was called, was born, Caligula took her to a temple that housed statues of goddesses and placed her on the lap of Minerva, instructing the goddess to nurse and train his new daughter. The reason for Caligula's hasty marriage with the neither young nor beautiful Milonia Caesonia was the purported illegitimacy of his daughter: should Caligula marry his daughter's mother, the child would become his heir.[3]

The order of events suggests that he did not want to marry until a child of his had already been born, a child who would be the purpose of the union.[2] Soon after her birth, Caligula set up donation boxes around Rome marked "Julia's Drink" or "Julia's Food". According to the ancient historian Suetonius, Caligula believed that Minerva would supervise his daughter's growth and education.[4] Suetonius further claims that "[Caligula] considered [Drusilla] as his own child for no better reason than her savage temper, which was such even in her infancy, that she would attack with her nails the face and eyes of the children that play with her."[4]

On 24 January 41, Julia Drusilla and her parents were at the imperial palace complex on the Palatine Hill in Rome. A conspiracy to assassinate Caligula and replace him with his uncle Claudius had been in discussion for some time and that day had been decided for the event. While Caligula was addressing an acting troupe of young men during a series of games and dramatics held for the Divine Augustus, the Praetorian Guard, led by Cassius Chaerea, stormed the imperial complex.[5]

The cryptoporticus (underground corridor) where this event would have taken place was discovered beneath the imperial palaces on the Palatine Hill.[6] By the time Caligula's loyal Germanic guard responded, the emperor was already dead. A few hours later, the Empress Caesonia was fatally stabbed by Lupus, a tribune especially sent by Chaerea to murder the two remaining family members.[7] Drusilla was murdered by "having her brains knocked out against a wall."[8]

Julia Drusilla's birth gave Caligula an additional excuse to impose heavier taxes on the empire for the burden of parenthood. Suetonius quotes him to have complained, "In addition to the burden of sovereignty, I must now shoulder that of fatherhood." He promptly took up a collection for her education and dowry.[12] Suetonius said that "after the birth of his daughter, complaining of his poverty, and the burdens to which he was subjected, not only as an emperor, but a father, he made a general collection for her maintenance and fortune. He likewise gave public notice, that he would receive new-year's gifts on the calends of January following; and accordingly stood in the vestibule of his house, to clutch the presents which people of all ranks threw down before him by handfuls and lapfuls. At last, being seized with an invincible desire of feeling money, taking off his slippers, he repeatedly walked over great heaps of gold coin spread upon the spacious floor, and then laying himself down, rolled his whole body in gold over and over again."[12]

She was portrayed by uncredited child actors in the 1976 miniseries I, Claudius, the 1979 film Caligula, and the third season (2019) of Netflix's anthology series Roman Empire.