Lifespan: Tenbun 8 (1539) to 8/29 of Kanei 1 (1624)
Other Names: Jinshirō (common)
Rank: bushō, daimyō
Title: Junior Fourth Rank (Lower) and Governor of Izu
Domain: Lord of Hitachi-Tsuchiura
Lord: Tokugawa Ieyasu
Father: Matsudaira Toshinaga
Wife: [Second] Daughter of Matsudaira Yoshikage
Children: Hisakiyo, daughter (wife of Ōkubo Yasutada), daughter (wife of member of the Ishikawa clan), daughter (formal wife of Matsudaira Nobuyoshi), daughter (dowager of Oguri Tadamasa)
Adopted Children: Matsudaira Nobuyoshi (adopted son-in-law to serve as heir)
Matsudaira Nobukazu served as a bushō and daimyō from the Sengoku to early Edo periods. Nobukazu served as the second head of the Fujii-Matsudaira family.
Nobukazu was born as the eldest son of Matsudaira Toshinaga, the founder of the Fujii-Matsudaira. The Fujii-Matsudaira were an illegitimate branch of the Matsudaira founded by Matsudaira Toshinaga, the fifth son of Matsudaira Nagachika.
From early on, Nobukazu served Tokugawa Ieyasu. In 1558, Nobukazu joined a nighttime assault against Shinano Castle in the northeast portion of Owari Province. During this battle, he killed over fifty enemy commanders and soldiers, earning renown in Mikawa and Owari provinces. In 1563, he participated in the Mikawa Ikkō-ikki and was praised by Ieyasu for his contributions.
In 1568, when Oda Nobunaga marched upon Kyōto in support of Ashikaga Yoshiaki, Nobukazu was dispatched as a commander of reinforcements. On 9/12, at the Battle of Kannonji Castle, a key event in the battles against the Rokkaku clan, at Mitsukuri Castle, Nobukazu was the first to breach the main citadel, garnering recognition from Nobunaga for his achievement.
In 1575, Nobukazu served in the Battle of Suwahara in Tōtōmi Province, a prelude to the Battle of Nagashino.
In 1590, after Ieyasu moved to the Kantō, Nobukazu was granted a fief of 5,000 koku in Fukawa in Shimōsa Province.
In 1600, at the Battle of Sekigahara, he made preparations in Edosaki against movements by Satake Yoshinobu. Owing to his contributions, after the war, he became the first lord of the Tsuchiura domain in Hitachi Province with a fief of 35,000 koku. His lineal heir, Matsudaira Hisakiyo, preceded him in death so, in 1604, he adopted Matsudaira Nobuyoshi from the Sakurai-Matsudaira family and transferred the headship of the clan to him.
In 1624, Nobukazu died at Sasayama Castle in Tanba Province – the fief of Nobuyoshi.
In 1563, during an uprising by members of the Ikkō sect, Nobukazu fell down after being shot in the left thigh by an enemy soldier with an arquebus. After the soldier appeared proud of his act, Nobukazu rose-up and approached him, shouting expletives. This caused the enemy soldier to retreat.