The result of this catastrophe was that the Orangists siezed power in the remaining provinces of Holland, Zeeland and Utrecht. William was installed as Stadtholder forcing Johan de Witt to resign as Grand Pensionary (William had the word “honourable” removed from the declaration of resignation). William announced that the people responsible for the disaster would be held responsible. One of the first to be held responsible would be Johan’s brother, Cornelis who had been the head of police. Cornelis was arrested and imprisoned in The Hague for treason.
On hearing that his brother was in prison Johan made the worst mistake of his life and payed him a visit. Whilst he was in the prison a crowd gathered around the building demanding the imprisonment of Johan. At this point the small contingent of soldiers guarding the prison left their posts. Without this deterrent the mob stormed into the prison. Johan and his brother Cornelis were butchered by the mob who, in their frenzy, were reported to eat the bodies of the two brothers.
https://thedailybeagle.net/2013/05/02/1 ... -minister/