Tsugumichi married the daughter of the 3rd daimyō of Kuroishi, Tsugaru Tsuguyasu, and was adopted as official heir due to the lack of a male descendant on Tsuguyasu’s death in 1851.
Japanese minelayer Tsugaru | Tsugaru Yukitsugu | Tsugaru Tsuguyasu | ''Tsugaru'' | Japanese cruiser Tsugaru | IJN ''Tsugaru'' |