The Shibata later became retainers of the Nagao clan, which was under control by the famed Uesugi Kenshin. After Shibata Shigeie died during the year of 1587, the Shibata clan attempted to break away from the Uesugi.
The Shibata family's allegiance shifted after they became retainers of the Nagao clan, which was under the leadership of the prominent Uesugi Kenshin. Following Shibata Shigeie's death in 1587, the Shibata clan attempted to assert their independence from the Uesugi.