Agrippina the Younger

Describes as vicious, violent, and unforgiving. Adopts Nero at age 13 and is married to Claudius. Eventually, she kills Claudius and rules through her son. Nero and his mother ruled the empire for a few years after his mother killed Emperor Claudius. After a few years, their relationship became hostile. At one point, Nero removed her face from Roman coins. At this point, she lost respect with Nero's advisors. No one knows for sure why there was a falling out. Some say it was due to arguments over Nero's lifestyle and affairs. Most likely, it was because she was plotting to kill Nero. So, two years into his reign, Nero relieved her of her bodyguards, exiled her from the imperial palace, and secretly sent assassins to kill her. The assassins poisoned her several times, set up elaborate booby traps, and put her on a ship and ordered an "accidental" collision with another boat. But she always survived, so eventually, they just stabbed her to death, making it look like a suicide. Nero was relieved because he was actually congratulated on the death of his mother. Many high ranking officials and some of the general public saw his mother trying to kill him, and viewed this as a fortuitous event.