Hōjō Masako
Hōjō Masako overheard a plot that Yoshikazu and Yoriie were hatching, and turned in her own son to Tokimasa, who did not hurt Yoriie but had Yoshikazu executed in 1203. Now, "Shōgun" Yoriie was very sick and retired to Izu Province. He was murdered in 1204, no doubt by Tokimasa's orders. Masako had not been aware of this. During the murders and purges of the Hiki clan, Minamoto no Ichiman, Yoriie's eldest son and heir and Masako's grandson, was also executed since he was part Hiki himself.