Yoshitoshi Shiba

Japanese: 斯波義敏 - しば・よしとし

Year of death: November 16, 1508 (December 8, 1508)
Year of birth: 1437
A military commander in the Muromachi period. Son of Mochitane. Sahyoe no sa and Sahyoe no kami. In 1452, Yoshitake, head of the Shiba family, died without an heir, so Yoshitoshi was adopted and took over as the guardian of the three provinces of Echizen (Fukui Prefecture), Owari (Aichi Prefecture), and Totomi (Shizuoka Prefecture). He was at odds with Kai Tsuneharu, a senior retainer of the Shiba family, and in 1456, he appealed to the shogunate about Tsuneharu's tyranny, but was defeated. The conflict between the two factions, which divided the Shiba family's vassals, escalated to a battle that extended over the entire Echizen province in 1458. The following year, when he was ordered to march to the Kanto region by Shogun Ashikaga Yoshimasa, Yoshitoshi left Kyoto and attacked the Kai forces in Tsuruga, Echizen, but was defeated. Furthermore, he was expelled from his position as head of the family by the shogunate, so he went down to Suo (Yamaguchi Prefecture) to seek refuge with the Ouchi clan. His son Matsuomaru (Yoshiyoshi), who succeeded him, was also dismissed in 1461, and Yoshimasa was welcomed by the Shibukawa clan. However, thanks to the efforts of Yoshimasa's favorites, such as Sadachika Ise, Yoshimasa's son, Yoshitane, Yoshimasa succeeded in regaining the family headship in July 1466. However, when Sadachika and others were overthrown in September, the family headship was transferred back to Yoshimasa. When the Onin War began, he joined the Eastern Army led by Hosokawa Katsumoto, and in May 1467, he went to Echizen and put pressure on Yoshimasa's side. The following year, Asakura Takakage, who had been in the Western Army led by Yamana Sozen under Yoshimasa, switched sides to the Eastern Army, but Yoshimasa refused to cooperate with Takakage and continued to resist with the Ninomiya clan in Ono County, his ancestors' base. However, in 1475, he left Tsuchihashi Castle (Ono City) and was sent to Kyoto by the Asakura clan. Afterwards, his son Yoshiyoshi, supported by the Kai and Ninomiya clans, attempted to invade Echizen, but failed, and in the 15th year of the same year, he descended to Owari. Seven of his renga poems are included in the Shinsen G7EDF Kunamishu.

(Akira Kawamura)

Source: Asahi Japanese Historical Biography: Asahi Shimbun Publications Inc. About Asahi Japanese Historical Biography

Japanese:

没年：永正5.11.16(1508.12.8)
生年：永享9(1437)
室町時代の武将。持種の子。左兵衛佐,左兵衛督。享徳1(1452)年斯波宗家の義健が嗣子のないまま没したため養子に迎えられ,越前(福井県)・尾張(愛知県)・遠江(静岡県)3カ国の守護職を継ぐ。斯波家の宿老甲斐常治と対立し,康正2(1456)年常治の専横を幕府に訴えるがかえって敗れ,斯波家臣を二分しての両派の抗争は長禄2(1458)年越前一国におよぶ合戦に発展した。翌年将軍足利義政から関東出陣を命じられると,義敏は京都を出てそのまま越前敦賀に甲斐勢を攻めるが,敗れる。そのうえ幕府からは家督を追われたため,大内氏を頼って周防(山口県)に下った。跡を継いだ子の松王丸(義良)も寛正2(1461)年退けられて渋川氏から義廉が迎えられたが,持種の伊勢貞親ら義政寵臣への働きかけにより,文正1(1466)年7月家督の奪還に成功した。しかし,9月貞親らが失脚すると,家督は再び義廉に移る。応仁の乱が始まると細川勝元率いる東軍に加わり,応仁1(1467)年5月越前に下って義廉方を圧迫した。翌年義廉のもと山名宗全率いる西軍にあった朝倉孝景が東軍に寝返ったが,義敏は孝景と共同行動をとることを拒み,父祖以来の本拠大野郡で二宮氏と共に抵抗を続けた。しかし,文明7(1475)年土橋城(大野市)を出て朝倉氏の手で京都に送られる。以後子の義良が甲斐・二宮氏らに擁されて越前侵攻を試みたがいずれも失敗し,同15年尾張に下った。『新撰G7EDF玖波集』に連歌7首が入っている。<参考文献>鈴木良一『応仁の乱』

(河村昭一)

出典　朝日日本歴史人物事典：（株）朝日新聞出版朝日日本歴史人物事典について　情報

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