Lifespan: Bunmei 18 (1486) to 9/9 of Tenbun 14 (1545)
Rank: bushō
Title: Governor of Shinano
Clan: Yokose
Lord: Iwamatsu Masazumi → Iwamatsu Ujizumi
Father: Yokose Kageshige
Siblings: Yasushige, Izumi Motoshige, Katsushige, sister (wife of Nagao Norinaga), sister (wife of Ōgo Shigemasa)
Children: Narishige, Shigekatsu, Shigeaki, Nagashige