Chōkyō was an era from 7/20 of 1487 to 8/21 of 1489 (based on the Japanese lunisolar calendar) in the Sengoku period.

During this era, Gotsuchi-mikado served as the emperor; Ashikaga Yoshihisa served as the ninth shōgun of the Muromachi bakufu.

Key events

In 1488, during an uprising by members of the Ikkō sect in Kaga Province, the monks attacked Togashi Masachika, a shugo daimyō and twenty-first head of the Togashi clan, causing him to kill himself while besieged in a burning castle.

In 1488, Yamana Masazane was appointed the military governor of Inaba Province with the support of Uragami Norimune.

Key battles

From 1487 to 1505, the Chōkyō War (Chōkyō no ran) occurred between Uesugi Akisada of the Yamauchi-Uesugi clan (the deputy shōgun of the Kantō) and Uesugi Sadamasa of the Ōgigayatsu-Uesugi clan.  As a result of this prolonged struggle, the Uesugi clan fell into decline while Hōjō Sōun made advances in the Kantō.

In 1487 and 1491, the Chōkyō-Entoku Conflict (Chōkyō-Entoku no ran) represented two battles led by the emperor and bakufu army against Rokkaku Takayori, the military governor of Ōmi Province.  In the aftermath of the Ōnin-Bunmei Conflict, military governors and families of local influence in the provinces seized lands owned by temples and shrines, manors owned by nobles, as well as the territory managed by local representatives of the bakufu.  Takayori’s actions in this regard prompted those who lost property to present their claims to the bakufu, which launched these expeditions in a bid to restore their authority in Ōmi. 

Notable births

In 1487, Hōjō Ujitsuna, a sengoku daimyō and second head of the Gohōjō clan, inherited control of Izu and Sagami provinces from his father, Hōjō Sōun, and expanded his domain to include one-half of Musashi and Suruga provinces and a portion of Shimōsa Province.

Notable deaths

In 1489, Ashikaga Yoshihisa, the ninth shōgun of the Muromachi bakufu, died at the age of twenty-three of illness related to over-indulgence.