The Lords of the Akō Domain in Harima Province associated with the story of what 18th-century historical event in Japan in which a band of "rōnin" (leaderless samurai) avenged the death of their master?
Asano clan The Asano clan (淺野氏 , Asano-shi ) was a Japanese samurai clan that claimed descent from the Minamoto clan. The Main Lineage ("sōke", 宗家) were Lords (daimyō) of the Hiroshima Domain in Aki Province and another famous branch family were Lords of the Akō Domain in Harima Province associated with the story of the Forty-seven rōnin. Their inherited character is "長". The family came to prominence when the sister of Asano Nagamasa married Toyotomi Hideyoshi.
Tsugaru clan The Tsugaru clan (津軽氏 , Tsugaru-shi ) was a Japanese samurai clan originating in northern Japan, specifically Mutsu Province (the northeast coast of Honshū). A branch of the local Nanbu clan, the Tsugaru rose to power during the Azuchi–Momoyama period. It was on the winning side of the Battle of Sekigahara, and entered the Edo period as a family of lords (daimyo) ruling the Hirosaki Domain. A second branch of the family was later established, which ruled the Kuroishi Domain. The Tsugaru survived as a daimyo family until the Meiji Restoration, when Tsugaru Tsuguakira of Hirosaki and Tsugaru Tsugumichi of Kuroishi were relieved of office. Their extended family then became part of the new nobility in the Meiji era.