Ieyasu made enthronement and dethronement that even Nobunaga had not made, and taking the advantage that he led the enthronement of Emperor Gomizunoo, he tried to make Masako, the fifth daughter of Hidetada, enter the court as an Imperial consort while he was still alive, to control the emperor's family as the maternal grandfather (it is said that the story of making Masako enter the court as the Imperial consort started in 1612.
家康は信長でさえ行なわなかった天皇の廃立を行ない、さらに後水尾天皇を自らの主導で即位させたのをいいことに、家康存命中から秀忠の5女・和子を入内させ、外祖父として天皇家まで操ろうとしたのである（入内の話は慶長17年（1612年）から始まっていたという。