Julia Drusilla (Classical Latin: IVLIA•DRVSILLA;[1] middle of AD 39 – 24 January 41), known as Drusilla the Younger (Classical Latin: DRVSILLA•MINOR; transcribed as Drusilla Minor) during her lifetime, was the only child and daughter of Roman Emperor Gaius (Caligula) and his fourth and last wife Milonia Caesonia. One-year-old Julia Drusilla was assassinated along with her parents on 24 January 41.