Minamoto no Sanetomo
In 1203, Masako's other son by Yoritomo, Minamoto no Sanetomo, became the third "shōgun" with Tokimasa as regent. Sanetomo was closer to his mother than his elder brother was, and still a child when appointed "shōgun", by contrast his brother, who was forced to abdicate as "shōgun" was now an adult. Nonetheless, Masako and Yoshitoki, the heir to the Hōjō, were angry with their father, especially after their mother, Hōjō no Maki, died in 1204. Masako's sister's husband, Hatakeyama Shigetada, was wrongfully executed on Tokimasa's orders even after Yoshitoki, Masako, and Tokifusa told Tokimasa he was not guilty of the "treason" charges. Hōjō Tokimasa was by 1205 the most powerful man in Kamakura.