Tokugawa Ieshige
Tsugaru Nobuyasu was the eldest son of Tsugaru Nobuaki, the 6th "daimyō" of Hirosaki Domain. His father died when he was four years old, and all power remained in the hands his great-grandfather, Tsugaru Nobuhisa until 1746, and in the hands of the senior clan retainers until he came of age. He was received in formal audience by "shōgun" Tokugawa Ieshige in 1753.