In Kyoto, Soun is said to have served Yoshimi ASHIKAGA, the younger brother of Shogun Yoshimasa, although if Soun had been born in 1456, as the most popular recent theories contend, he would have been only 10 years old during the period Yoshimi was in line to be the next shogun (1464-1467), and Yoshimi had changed sides to the western army after 1467.
京都で早雲は将軍義政の弟の足利義視に仕えたとされるが、近年有力視される康正2年（1456年）生まれとすると、義視が将軍後継者と擬されていた時期（1464年-1467年）には10歳前後で幼すぎ、応仁元年（1467年）以降、義視は西軍に走っている。