Lifespan: 15xx to 15xx
Other Names: Miyamatsu (childhood), Matasaburō (common), Suenaga Kagemichi
Title: Master of the Imperial Guards of the Left Division, Deputy Governor of Hitachi
Clan: Isokane (illegitimate branch of the Mukunashi)
Lord: Murakami Yoshimitsu → Kobayakawa Takakage → Mōri clan
Children: Daughter (wife of Isokane Kagtsuna)
Adopted Children: Kagetsuna (third son of Nomi Munekatsu)
Isokane Kagemichi served as a bushō during the Sengoku and Azuchi-Momoyama periods. He was a retainer of the Kobayakawa clan and served as the lord of Horino Castle in Aki Province.
The Isokane were scions of the Mukunashi clan, an illegitimate branch of the Kobayakawa clan. Initially, Kagemichi affiliated with the Innoshima-Murakami clan and adopted the surname of Suenaga.
In the ninth month of 1555, during the Battle of Itsukushima, Kagemichi was requested to serve by Kobayakawa Takakage, and after persuading his lord, Murakami Yoshimitsu, joined the side of the Mōri. In combination with the Kobayakawa forces, Kagemichi commanded the Murakami navy and fought valiantly, killing Ikōga Jūrōzaemon-no-jō who was on the side of the Sue.
Thereafter, Kagemichi continued to associate with the Kobayakawa clan and commanded one wing of the Kobayakawa navy. After Takakage moved his main base from Niitakayama Castle to Mihara Castle, Kagemichi served as the caretaker of Mihara Castle.
Kagemichi did not have any sons so he adopted the third son of Nomi Munekatsu as a son-in-law. After the retirement of Takakage, he accompanied him and after the demise of Takakage, he was folded into the band of retainers of the Mōri clan.