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
Yang Zhao was their oldest son. In his infancy, he was raised by his grandparents Emperor Wen and Empress Dugu. In 590, Emperor Wen created him the Prince of Henan. He initially married the daughter of the official Cui Hongsheng (崔弘昇) as his wife and princess, but after Princess Cui's aunt, who married his uncle Yang Jun the Prince of Qin, was discovered to have poisoned Yang Jun over her jealousness for Yang Jun's concubines in 597, Yang Zhao divorced his wife and married the daughter of the official Wei Shou (韋壽) the Duke of Hua as his wife and princess. After