Regardless of whether or not the foregoing is true, the only activities of Yukimori's that have been made clear to posterity are those which took place after the downfall of the daimyo in the Sengoku period, Amago clan as the result of that capitulation of Yoshihisa AMAGO to the Mori clan in 1566.
いずれにせよ活動が明らかに知られるのは永禄9年（1566年）に尼子義久が毛利氏に降り、戦国大名尼子氏が滅びて以降のことである。