Shimazu Nariakira
According to the sayagaki on Kanetake's sword, Tanobe Michihiro Sensei states that "Kanetake was a senior retainer of the Shimazu family" and was duly a trusted retainer during the three reigns of Shimazu Nariakira, the regent Shimazu Hisamitsu, and for the 29th and final lord, Shimazu Tadayoshi (2nd).