Battle of Fujinaminawate
Date: 9/13 of Eiroku 4 (1561)
Location: Environs of Seto-Fujinami in the Hazu District of Mikawa Province
Outcome: To capture the territory of the Tōjō-Kira clan in Mikawa Province, Matsudaira Motoyasu built fortresses to encircle Tōjō Castle. In an ensuing pursuit by Matsudaira forces, the chief retainer of the Kira clan, Tominaga Tadamoto, was killed in Fujinaminawate. This loss caused Kira Yoshiaki (the head of th Saijō-Kira clan) to lose the zeal to fight and surrender his castle and territory to Motoyasu.
The Battle of Fujinaminawate occurred on 9/13 of Eiroku 4 (1561). This was one of a series of battles waged between the Kira clan and Matsudiara Motoyasu (later known as Tokugawa Ieyasu) in regard to Tōjō Castle. In this battle, the chief retainer of Kira Yoshiaki named Tominaga Tadatomo was killed by Honda Hirotaka below the castle at Fujinaminawate whereupon Yoshiaki surrendered.
The death of Imagawa Yoshimoto, the powerful sengoku daimyō based in Suruga Province, provided an opportunity for Matsudaira Motoyasu to establish his own base of power. To begin, he aimed to capture the territory of the Tōjō-Kira clan. From the fourth month of 1561, he led attacks against Ushikubo and Tōjō castles in Mikawa Province, making clear his independence from the Imagawa clan. However, Tōjō Castle did not easily fall, and, in the sixth month of the same year, he positioned Matsui Tadatsugu in Tsunohira, Honda Hirotaka in Komaki, and Ogasawara Nagashige (Yoshitsugu) in Kasuzuka, and then had each of them construct fortresses to encircle Tōjō Castle. Tominaga Tadamoto, the chief retainer of the Kira family and lord of Muro Castle, led forces out to engage in a vigorous defense. In the fourth month, at the Battle of Zenmyōtsutsumi, Motoyasu incurred battlefield losses including Matsudaira Yoshikage (who was occupying Nakashima Castle in the Tōjō territory) along with the castle. Thereafter, the Matsudaira forces continued to lose on each occasion.
Course of events
On 9/13 of Eiroku 4 (1561), Honda Hirotaka and Matsui Tadatsugu departed from their fortresses to head toward Tōjō Castle, advancing to Fujinaminawate. At this time, as a signal of his determination, Hirotaka had Hiraiwa Motoshige (a soldier under the command of Tadatsugu) cut the ends of the outer sash of his armor so it would not come undone again. Hirotaka led at the front of the vanguard forces while Matsui Mitsutsugu (Tadatsugu’s younger brother) advanced in the rear guard. Tominaga Tadamoto, who sought for the Matsudaira army to leave their fortresses, charged forward, but plunged ahead as a lone horseman. The Matsudaira forces swarmed down, pursuing the fleeing Tadatsugu to Fujinaminawate. Ōkubo Daihachirō and Torii Hanrokurō from the Matsudaira side caught-up to challenge Tadamoto, but were cut down. At this point, however, Tadamoto was exhausted and was stabbed to the ground with a spear by Hirotaka and killed by a retainer of Hirotaka named Honda Jinjūrō.
Matsudaira Motoyasu praised Hirotaka for the killing of Tominaga Tadamoto, who was a tenacious enemy, and awarded him Tadamoto’s territory. Having lost his trusted retainer, Kira Yoshiaki lost the zeal to fight, whereupon he vacated Tōjō Castle and surrendered.
After Tadamoto’s death, he was revered as a brave warrior. For the Kira clan, his loss was regrettable, so Hirotaka built a memorial to pray for him at Fujinaminawate. Thereafter, Tadamoto was commonly known as Bangorō.
After the death of Bangorō Tadamoto, the Tominaga clan associated with the Tōjō-Matsudaira family after Tominaga Sukehiro (Tadamoto’s uncle from the same Tōjō group) surrendered to Matsudaira Motoyasu and became a retainer. Sukehiro also served Matsudaira Tadayoshi from the period when he was the lord of Numazu Castle and his grandchildren were among the Jintarō group (a band of retainers originating from retainers of the former Tōjō-Kira and Tōjō-Matsudaira) serving the later Owari-Tokugawa family.