At a time in the past, there was an incident (the Incident of Oyotsu-Goryonin) that when Tsunayoshi's grandfather Hidetada TOKUGAWA made his daughter, Masako TOKUGAWA, chugu of Emperor Gomizuo, he banished Princess Umenomiya and her mother Yotsuko YOTSUTSUJI (Oyotsu-Goryonin) from the Imperial Court because they were obstacles for Masako and exiled some Kugyo (the top court officials) including her relatives.
かつて綱吉の祖父・徳川秀忠は娘・徳川和子を後水尾天皇の中宮にする際に、とその母四辻与津子（お与津御寮人）の存在が障害であるとして二人を宮中から追放した上、与津子の親族を含む数人の公卿らを流刑に処した（「お与津御寮人事件」）という経緯があった。