Armagnac–Burgundian Civil War – Wikipedia
On this day in history in 1418 – Armagnac–Burgundian Civil War: Parisians slaughter Bernard VII, Count of Armagnac and his suspected sympathizers, along with all prisoners, foreign bankers, and students and faculty of the College of Navarre.
https://en.wikipedia.org/wiki/Armagnac%E2%80%93Burgundian_Civil_War