Shirakawa Domain
Munenori was the younger son of Matsudaira Chikakiyo, who was the fourth son of Matsudaira Naonori of Shirakawa Domain. Naonori was in turn the son of Matsudaira Naomoto of Himeji Domain, who was in turn the fifth son of Fukui domain's founder, Yūki Hideyasu. His childhood name was Senjirō (千次郎).