Isahaya Kiyonao

諫早清直

Isahaya Clan

Bushi

Hizen Province

Lifespan:  15xx to 5/5 of Keichō 17 (1612)

Name Changes:  Isahaya Shigeyasu → Isahaya Kiyonao → Takaya Iritsubo → Takaya 入古

Other Names:   Magoshichirō, Shichirō-zaemon

Rank:  bushi

Clan:  Ryūzōji → Isahaya-Nabeshima → Takaya

Bakufu:  Edo

Domain:  Hizen-Saga → Chōshū

Lord:  Ryūzōji Masaie → Ryūzōji Takafusa → Mōri Hidenari

Father:  Ryūzōji Ieharu

Siblings:  Kiyonao, Naonori

Children:  Takaya Kiyonobu, Takaya Kiyoharu, Takaya Kiyotsugu

Isahaya Kiyonao served as a bushi from the Azuchi-Momoyama to early Edo periods.  He was a retainer of the Hizen-Saga domain and, later, the Chōshū domain.

Kiyonao was born as the son of Ryūzōji Ieharu, the first head of the Isahaya-Nabeshima family which was one of the Four Families of the Ryūzōji – four families from the Ryūzōji clan folded into the governance structure of the Saga domain by the Nabeshima clan in the Edo period.  Kiyonao was the grandson of Ryūzōji Akikane.

Kiyonao did not get along well with his father so he did not inherit the headship of the clan.  In Takeo in Hizen, he underwent the rites of tonsure, changed his name to Takaya Iritsubo, and served Mōri Hidenari of the Mōri clan.  The Isahaya clan was inherited by his younger brother, Isahaya Naonori, and the family survived as one of the Four Families of the Ryūzōji until the end of the Edo period. 

On 5/5 of Keichō 17 (1612), Kiyonao died and was succeeded by his eldest son, Takaya Kiyonobu, who served as a retainer of Mōri Hidenari of the Chōshū domain in the Edo period.