Lifespan: 14xx to 2/20 of Eishō 17 (1520) or 2/20 of Daiei 2 (1522)
Title: Field Officer of Outer Palace Guards of the Left Division, Governor of Shinano
Lord: Iwamatsu Masazumi
Father: Yokose Narishige (?)
Siblings: Kageshige, Shigemichi
Children: Yasushige, Izumi Motoshige, Katsushige, daughter (wife of Nagao Norinaga), daughter (wife of Ōgo Shigemasa)
Yokose Kageshige served as a bushō from the late Muromachi to the Sengoku period. He was the sixth head of the Yokose clan and the head of the chief retainers of the Iwamatsu clan.
Kageshige was born as the son of Yokose Narishige. Following the death of Narishige (in either 1501 or 1511), Kageshige inherited the headship of the Yokose clan.
From 1487, in the Chōkyō Conflict, Kageshige affiliated with the Yamauchi-Uesugi family. In 1504, at the Battle of Tachikawa-no-hara in Musashi Province, Kageshige deployed as a proxy for Iwamatsu Masazumi. Thereafter, he intervened in an internal conflict besetting the Yamauchi-Useugi known as the Eishō Conflict. Kageshige sided with Uesugi Norifusa and Nagao Kagenaga to fight against Uesugi Akizane, Nagao Akikata, and Narita Akiyasu. Gradually, he became a dominant figure in the family. In 1514, he went to the capital of Kyōto and met with Ashikaga Yoshitane, the tenth shōgun of the Muromachi bakufu. The powerful alliance between the Yokose clan and the Ashikaga-Nagao clan later led to the birth of Nagao Akinaga.
Later, Kageshige entered the priesthood and adopted the name of Sōkō.
Based on the theory, Kageshige died either on 2/20 of Eishō 17 (1520) or 2/20 of Daiei 2 (1522). He was succeeded by his eldest son and designated heir, Yokose Yasushige.
According to another record, Kageshige was killed in action at the Battle of Musashi-Suga in the twelfth month of 1523, whereupon he was succeeded by his son, Yokose Kunitsune. Further investigation indicates an error in the records of the Yura family, as the Battle of Suga occurred in 1455, and Yokose Sadakuni was the individual killed in action. The accounts of Kunitsune are surmised to be those of Kageshige. Another interpretation of these records is that Kunitsune was another name for Kageshige.