Answer
Poppaea Sabina was Nero's mistress that led to Claudia Octavia's banishment. Poppaea was born into a wealthy and influential family in Rome. She was married to Rufrius Crispinus, a Roman senator, but she had an affair with Nero while he was married to Octavia. In 62 AD, Nero divorced Octavia and married Poppaea. Octavia was banished to the island of Pandateria, where she was later killed.