While negotiations between the Edo bakufu the Edo bakufu (Japanese feudal government headed by a shogun) and the Imperial Court were ongoing, Emperor Go-Mizuno ascended the throne in 1611, and it was decided in 1619 that Shogun Hidetada TOKUGAWA's daughter Kazuko TOKUGAWA would become his consort.
後水尾天皇は江戸幕府と朝廷の折衝が行われるなか慶長16年に即位し、具体化していた将軍徳川秀忠の娘徳川和子の入内が元和5年（1619年）決定する。