Doors more powerfull than guillotines

France in its history had many kings. Some of them were ruling till their natural death but some had their reign stopped by a not natural case. The most well-known not natural case is the execution of Louis the XVI, who got executed by guillotine. The funny story is that in the whole of French history more of its kings died because of doors than guillotines. Kings Louis III and Charles VIII both died because they had hit the doorway with their heads.