Hamamatsu Domain
Matsudaira Nobunao was the eldest son of Matsudaira Nobutoki, the daimyō of Yoshida Domain in Mikawa Province. On the death of his father on June 44, 1744, he became daimyō of Hamamatsu Domain and head of the Ōkōchi-branch of the Matsudaira clan. A few days later, his courtesy title changed to "Izu-no-kami". On October 15, 1752, he was transferred to Yoshida Domain.