Lifespan: Unknown to 10/3 of Tenbun 12 (1543)
Other Names: Yoichi, Naizen-no-kami
Lord: Matsudaira Kiyoyasu → Matsudaira Hirotada
Father: Matsudaira Nobusada
Siblings: Kiyosada, sister (wife of Mizuno Nobumoto), sister (wife of Matsudaira Chikanori), sister (second wife of Matsudaira Yasutada), sister (wife of Oda Nobumitsu)
Wife: Daughter of Oda Nobusada (younger sister of Oda Nobuhide)
Children: Ietsugu, daughter (wife of Matsudaira Yoshikage)
Matsudaira Kiyosada served as a bushō during the Sengoku period. Kiyosada was the lord of Sakurai Castle in the Hekikai District of Mikawa Province. The Sakurai-Matsudaira were an illegitimate branch of the Matsudaira clan founded by Matsudaira Nobusada, the second son of Matsudaira Nagachika, the fifth head of the main branch of the Matsudaira clan.
Kiyosada was born as the eldest son of Matsudaira Nobusada, the first head of the Sakurai-Matsudaira family.
In 1529, Kiyosada, together with Nobusada, served meritoriously in an assault against Yoshida Castle in Imahashi in the Atsumi District of Mikawa. This was followed by an attack on Shinano Castle in Owari Province that served as the base of Sakai Hidetada, a retainer of Oda Nobuhide.
After the death of Nobusada, Kiyosada inherited the headship of the Sakurai-Matsudaira, becoming the second head of the family. In 1540, in the wake of the fall of Anjō Castle, Kiyosada temporarily aligned with the Oda, but after Anjō was recaptured, he returned to the service of the main branch of the Matsudaira clan.
Kiyosada died on 10/3 of Tenbun 12 (1543). His age at the time of his demise is unknown. His grave is at the family temple on Mount Sakurai.