A Cyclopaedia of Female Biography/Plancina
PLANCINA
Was the wife of Piso, consul in the reign of Augustus, and accused with him of having murdered Germanicus in the reign of Tiberius. She was acquitted, either through the partiality of the Empress Livia, or of Tiberius. Though devoted to her husband during their confinement, she was no sooner set free than she left him to his fate. At the instigation of Livia, she committed the greatest crimes to injure Agrippina. Being accused of them, and knowing she could not elude justice, she committed suicide, A. D. 33