I have an event in my book that needs a better name than “the incident” since it’s critical to the book and a historical event. A group called the Council took over the government 12 years prior to the story. It’s not a violent event as only the queen and 2 of her guards die swiftly and quietly by poison and the children are sealed away.
An example I can’t get out of my head is the Great Hall Tragedy from Grancrest Senki.
The palace is called Norma Esther.
The town is called Takiran.
The family line is Cunningham.