Things were going well for the Minamoto against the Taira. In 1183, Minamoto no Yoshinaka, Yoritomo's cousin, took Kyoto before Yoritomo could. That same year, Yoshitsune and Noriyori, Yoritomo's brothers, arrived in Kamakura and joined the Gempei War on the side of Yoritomo. In 1184, Minamoto no Yoshitsune took Kyoto in the name of Yoritomo, and had Yoshinaka executed. By that time, the Taira had fled with the Emperor Antoku to Shikoku, and, in his place, the Minamoto (with the support of Cloistered Emperor Go-Shirakawa) enthroned Emperor Go-Toba, a younger brother of Antoku. In 1185, Yoshitsune defeated the Taira at the Battle of Ichi-no-Tani. Taira no Munemori and Taira no Shigehira were executed in Kyoto and Nara respectively, while the rest of the Taira, including Kiyomori's widow Taira no Tokuko and Emperor Antoku drowned at the Battle of Dannoura.