Hamamatsu Domain
Inoue Masasada was the second son of the previous "daimyō" of Hamamatsu Domain, Inoue Masatsune. He became 7th head of the Mikawa-branch of Inoue clan and "daimyō" of Hamamatsu Domain on his father's death in 1766. In 1769, he was awarded Lower 5th Court Rank and the courtesy title of "Kawachi-no-kami."