Praetorian Guard, Rufrius Crispinus. She assisted Claudius in administering the empire and became very wealthy and powerful. Ancient sources claim that Agrippina successfully influenced Claudius into adopting her son and making him his successor. Lucius Domitius Ahenobarbus was adopted by his great maternal uncle 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 his step sister Claudia 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 outraged by Claudius' adoption of Nero and his choice of Nero as successor, instead of choosing his own son Britannicus. Nero and Octavia were married on June 9, 53. Claudius later repented of marrying Agrippina and adopting Nero, began to favour Britannicus, and started preparing him for the throne. His actions allegedly gave Agrippina a motive to eliminate Claudius. The ancient sources say she poisoned Claudius on October 13, 54 (a Sunday) with a plate of deadly mushrooms at a banquet, thus enabling Nero to quickly take the throne as emperor. Accounts vary wildly with regard to this private incident and according to more modern sources, it is possible that Claudius died of natural causes; Claudius was 63 years old. In the aftermath of Claudius's death, Agrippina, who initially kept the death secret, tried to consolidate power, and immediately ordered that the palace and the capital be sealed. All the gates were blockaded and exit of the capital forbidden and she introduced Nero first to the soldiers and then to the senators as emperor. Reign of Nero Relationship with Nero Nero was raised to emperor and Agrippina was named a priestess of the cult of the deified Claudius. She now attempted to use her son's youth to participate in the rule of the Roman Empire. She enjoyed imperial prerogatives: holding court with the emperor by her side, being allowed to visit senate meetings from behind a curtain, and appearing as a partner to her son in the royal coins and statues. The