 He was in his turn defeated in Koshigoe by Ashikaga Takauji, who had come in force from Kyoto to help his brother.Takauji, founder of the Ashikaga shogunate which, at least nominally, ruled Japan during the 14th, 15th and 16th centuries, at first established his residence at the same site in Kamakura where Yoritomo's Ōkura Bakufu had been (see above), but in 1336 he left Kamakura in charge of his son Yoshiakira and went west in pursuit of Nitta Yoshisada.The Ashikaga then decided to permanently stay in Kyoto, making Kamakura instead the capital of the (or ), a region including the provinces of Sagami, Musashi, Awa, Kazusa, Shimōsa, Hitachi, Kozuke, Shimotsuke, Kai, and Izu, to which were later added Mutsu and Dewa, making it the equivalent to today's Kanto, plus the Shizuoka and Yamanashi Prefectures.