Agrippina the Younger and stepfather in 50. Lucius' name was changed to "Nero Claudius Caesar Drusus Germanicus" and he became Claudius's adopted son, heir and recognised successor. Agrippina and Claudius betrothed Nero to Octavia, and Agrippina arranged to have Seneca the Younger return from exile to tutor the future emperor. Claudius chose to adopt Nero because of his Julian and Claudian lineage. Agrippina deprived Britannicus of his heritage and further isolated him from his father and succession for the throne in every way possible. For instance, in 51, Agrippina ordered the execution of Britannicus' tutor Sosibius because he had confronted her and was
Agrippina the Younger called back from exile to be a tutor to Nero. Messalina considered Agrippina's son a threat to her son's position and sent assassins to strangle Lucius during his siesta. The assassins fled in terror when they saw a snake suddenly dart from beneath Lucius' pillow—but it was only a sloughed-off snake-skin in his bed, near his pillow. In 47, Crispus died, and at his funeral, the rumor spread around that Agrippina poisoned Crispus to gain his estate. After being widowed a second time, Agrippina was left very wealthy. Later that year at the Secular Games, at the performance of the