Given the following context:  On hearing that her husband, the Emperor Claudius, has died in a storm at sea, Agrippina plots to secure the throne for Nero, her son by a previous marriage. Nero is unenthusiastic about this project, but consents to his mother's wishes ("Con saggio tuo consiglio"). Agrippina obtains the support of her two freedmen, Pallas and Narcissus, who hail Nero as the new Emperor before the Senate. With the Senate's assent, Agrippina and Nero begin to ascend the throne, but the ceremony is interrupted by the entrance of Claudius's servant Lesbus. He announces that his master is alive ("Allegrezza! Claudio giunge!"), saved from death by Otho, the commander of the army. Otho himself confirms this and reveals that Claudius has promised him the throne as a mark of gratitude. Agrippina is frustrated, until Otho secretly confides to her that he loves the beautiful Poppaea more than he desires the throne. Agrippina, aware that Claudius also loves Poppaea, sees a new opportunity of furthering her ambitions for Nero. She goes to Poppaea and tells her, falsely, that Otho has struck a bargain with Claudius whereby he, Otho, gains the throne but gives Poppaea to Claudius. Agrippina advises Poppaea to turn the tables on Otho by telling the Emperor that Otho has ordered her to refuse Claudius's attentions. This, Agrippina believes, will make Claudius revoke his promise to Otho of the throne. Poppaea believes Agrippina. When Claudius arrives at Poppaea's house she denounces what she believes is Otho's treachery. Claudius departs in fury, while Agrippina cynically consoles Poppaea by declaring that their friendship will never be broken by deceit ("Non ho cor che per amarti").  answer the following question:  What is the name of the person whose husband, the Emperor Claudius, died in a storm at sea?
Agrippina