Drusus Julius Caesar
In the same year, Livilla married her cousin Drusus Julius Caesar (Drusus the Younger), the son of Tiberius. When Tiberius succeeded Augustus as Emperor in AD 14, Livilla again was the wife of a potential successor. Drusus and Livilla had three children, a daughter named Julia Livia in around AD 7 and twin brothers in AD 19: Germanicus Gemellus who died in 23, and Tiberius Gemellus who survived infancy.