Lifespan: 15xx to Tenshō 18 (1590)
Title: Assistant Director of Judiciary
Clan: Minami (a branch of the Nanbu clan descended from the Seiwa-Genji)
Lord: Nanbu Nobunao
Father: Minami Yasuyoshi
Siblings: Yoshiharu, Moriyoshi, Yasumasa, Naoyoshi
Wife: Daughter of Nanbu Harumasa
Minami Moriyoshi served as a bushō during the Sengoku and Azuchi-Momoyama periods. He was the third head of the Minami clan and served as the lord of Asamizu Castle in the Sannohe District of Mutsu Province.
Moriyoshi was born as the second son of Minami Yasuyoshi. He was the grandson of Minami Nagayoshi. His older brother, Minami Yoshiharu, died early so Moriyoshi inherited the headship of the clan. His formal wife was the daughter of Nanbu Harumasa.
In 1590, during the Revolt of Kunohe Masazane, his base at Asamizu Castle was attacked by the Kushibiki clan who were aligned with the Kunohe clan so he fought against them. This is known as the Battle of Hōshioka. His troops took control of the early stages of the conflict, giving chase to the fleeing enemy. Later, however, Moriyoshi and his younger brother, Minami Yasumasa, were killed after being caught in a pincer attack by Kushibiki troops lying in ambush.
After his demise, Moriyoshi was succeeded by his youngest brother, Minami Naoyoshi.