Julia Livilla was the youngest child of Germanicus and Agrippina the Elder and the youngest sister of the Emperor Caligula.
During the reign of Caligula, coins were issued depicting his three sisters, Agrippina, Drusilla and Iulia
Julia Drusilla was a member of the Roman imperial family, the second daughter and fifth child of Germanicus and Agrippina the Elder to survive infancy. She was the favorite sister of Emperor Caligula,
Drusilla, Statens Museum for Kunst
Inscription found at Caere (Etruria), dedicated to deified Drusilla, sister of Caius Augustus, whose name is cancelled. CIL XI, 3598