In 1846, during the course of an unsavory palace intrigue involving an unsolved murder, meddling by the queen, and the massacre of some 100 high-ranking court figures who had been lured to a palace courtyard, the instigator of these events became the power behind the throne.
The person who caused these events ended up becoming the power behind the throne.
All court figures survived the attempted massacre by convincing the assassins to spare them.