Nero
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2007
...according to rumor she was to blame for the worst of Neros behavior. In a.d. 59 he murdered his mother and in a.d. 62, his wife...Piso emperor. The detection of this plot began a string of violent deaths, e.g., of Seneca, Lucan, and Thrasea Paetus. Nero had...