During Masako's pregnancy, he again had an affair with a woman named Daishin no Tsubone, who gave birth to a boy (Jyogyo); however, fearing Masako's anger, no birth ceremony was held.
政子の妊娠中に頼朝はまたも大進局という妾のもとへ通い、大進局は頼朝の男子（貞暁）を産むが、政子を憚って出産の儀式は省略されている。