Gaius Sallustius Crispus Passienus be the end of Agrippina's villainy, for Claudius' wife, Messalina, correctly perceiving the threat from Agrippina, attempted to have Lucius assassinated, in order to ensure the succession of Britannicus, her own son by the emperor. The attempt failed, and, after procuring Passienus' death, Agrippina worked to bring about the downfall of Messalina. She then seduced her uncle, the emperor, becoming his wife, and persuaded Claudius to adopt Lucius, naming him his heir in preference to his own son. Agrippina then procured the emperor's death, placing her son, now the emperor Nero, on the throne; he soon disposed of Britannicus. Agrippina
Agrippina the Elder Agrippina the Elder merely standing on a bridge waving the soldiers passing by, whereas her daughter eclipses her by presiding over a military tribunal and accepting gifts from foreign ambassadors. Tacitus also records serious tension between Agrippina and Livia. He describes Livia as having visited "stepmotherly provocations" on Agrippina. He says of Agrippina: "were it not that through her moral integrity and love for her husband she converted an otherwise ungovernable temper to the good" (Tacitus, "Annals" 1.33). Despite being sympathetic to her as a victim of imperial oppression, he uses expressions like "excitable", "arrogant", "proud", "fierce", "obstinate", and "ambitious"