平治の乱における源義朝謀叛の動機形成 : 勲功賞と官爵問題を中心に (長部重康教授退職記念号)
The accepted theory about the Heiji Disturbance has been rejected time and again since the 1980s, especially in 2004 and afterwards by Mr. Yasuo Motoki. The first aim of this monograph is to test Mr. Yasuo Motoki's theory. The second is to investigate the formation of the motives behind the Yoshitomo Rebellion in the Heiji Disturbance. (1) As a result of verifying and evaluating the historical context, the Motoki theory proved to be mistaken. The prize to Yoshitomo should be estimated as being "too small". (2) The account in "Gukansyo （愚管抄）" of Yoshitomo is reliable, and when we consider Yoshitomo's rebellion, we should think of the problem between Yoshitomo and Kiyomori （清盛） not as being between individuals but rather as a problem between <families>, and must fully respect "Gukansyo". (3) Speaking of the marriage issue between the Yoshitomo family, the Kiyomori family and the Sinzei （信西） family, Yoshitomo proposed to the 3rd son of the Sinzei family, but was rejected by Sinzei. After that, Yoshitomo was immediately confronted with a marriage between the Sinzei and Kiyomori families. This incident damaged Yoshitomo's self-respect and this is presumed to have greatly increased Yoshitomo's hostility towards both Sinzei and Kiyomori. (4) Although there had been clear differences between the Yoshitomo and Kiyomori families before the Hougen Disturbance, these differences spread steadily after the Hougen Disturbance in spite of Yoshitomo's acts of courage. It is presumed that Yoshitomo held the view that the situation with regard to the Kiyomori family could not be recovered through the usual means.
経済志林 80(3), 129-187, 2013-03