The San-saemon incident was the incident in which former retainers of the deceased father and son, Yoshiyasu ICHIJO and Takayoshi ICHIJO, were arrested for attempting to attack Michichika TSUCHIMIKADO, Gon Dainagon (provisional major counselor).
三左衛門事件（さんさえもんじけん）とは、一条能保・一条高能父子の遺臣が権大納言土御門通親襲撃を企てたとして捕らえられた事件。