Shimazu Nariakira
, also known as Matsudaira Keiei, or better known as Matsudaira Shungaku (春嶽) was a Japanese "daimyō" of the Edo period. He was head of the Fukui Domain in Echizen Province. He is counted as one of the , along with Date Munenari, Yamauchi Yōdō and Shimazu Nariakira. "Yoshinaga" is his "imina" and "Shungaku" (春嶽, "Spring Mountain") is his "gō".