Sassa Narimasa hailed from Hira Castle, now the site of Koutsu-ji Temple in Nishi-Ku, Nagoya City. At the age of 14, following his genpuku ceremony, he joined his father as a retainer of Oda Nobunaga. Serving under Nobunaga, Narimasa participated in campaigns against the Azai and Asakura clans. His valorous deeds during battles alongside Shibata Katsuie against the Uesugi clan earned him the lordship of Etchu Province (Toyama Prefecture).
Following Nobunaga's demise, Sassa Narimasa aligned himself with Tokugawa Ieyasu during the Battle of Komaki-Nagakute near Nagoya, where the outcome remained indecisive. Subsequently, under Ieyasu's command, Narimasa led 15,000 samurai in a siege of Suemori Castle in Noto Province, a stronghold held by his close friend Maeda Toshiie. Despite a valiant defense led by Commander Okumura Nagatomi, the castle was on the brink of surrender until Toshiie arrived with reinforcements, routing Narimasa's forces on the night of October 9, 1584.
The defeat compelled Narimasa to submit to Toyotomi Hideyoshi. Although initially forgiven, he faced challenges governing Hogo domain in Kumamoto, Kyushu, and failed to suppress a local peasant uprising. As a result, Hideyoshi ordered Narimasa to perform seppuku, which he dutifully carried out on July 7, 1588, at the age of 52.
See also
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Tokugawa Iemochi
Tokugawa Iemochi (1846–1866) was the fourteenth shōgun of the Tokugawa shogunate and ruled from 1858 until his death. His reign came during the turbulent final years of the shogunate, when Japan faced growing Western pressure and serious internal political conflict.
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Tokugawa Ienari
Tokugawa Ienari (1773–1841) was the eleventh shōgun of the Tokugawa shogunate and ruled from 1787 to 1837, making him the longest-serving Tokugawa shōgun. He was a great-grandson of the eighth shōgun, Tokugawa Yoshimune.
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Matsudaira Nobuyasu
Matsudaira Nobuyasu was only twenty years old when his father ordered him to commit seppuku. The reason was not a defeat in battle, but a crisis inside the Tokugawa family that had become too dangerous to ignore.
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Yamagata Masakage
Masakage was one of Takeda Shingen’s most loyal and capable commanders. He was included in the famous list of the “Twenty-Four Generals of Takeda Shingen” and also belonged to the inner circle of four especially trusted warlords known as the Shitennō.
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Yagyu Munenori
Yagyū Munenori began his service under Tokugawa Ieyasu while his father, Yagyū Muneyoshi, was still at his side. In 1600, Munenori took part in the decisive Battle of Sekigahara. As early as 1601, he was appointed a kenjutsu instructor to Tokugawa Hidetada, Ieyasu’s son, who later became the second shogun of the Tokugawa clan.
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Yagyu Muneyoshi
A samurai from Yamato Province, he was born into a family that had been defeated in its struggle against the Tsutsui clan. Muneyoshi first took part in battle at the age of sixteen. Due to circumstances beyond his control, he was forced to enter the service of the Tsutsui house and later served Miyoshi Tōkei. He subsequently came under the command of Matsunaga Hisahide and in time became a vassal first of Oda and later of Toyotomi.
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Endo Naozune
Naozune served under Azai Nagamasa and was one of the clan’s leading vassals, renowned for his bravery and determination. He accompanied Nagamasa during his first meeting with Oda Nobunaga and at that time asked for permission to kill Nobunaga, fearing him as an extremely dangerous man; however, Nagamasa did not grant this request.
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Hosokawa Sumimoto
Sumimoto came from the Hosokawa clan: he was the biological son of Hosokawa Yoshiharu and at the same time the adopted son of Hosokawa Masamoto, the heir of Hosokawa Katsumoto, one of the principal instigators of the Ōnin War. Masamoto was homosexual, never married, and had no children of his own. At first he adopted Sumiyuki, a scion of the aristocratic Kujō family, but this choice provoked dissatisfaction and sharp criticism from the senior vassals of the Hosokawa house. As a result, Masamoto changed his decision and proclaimed Sumimoto as his heir, a representative of a collateral branch of the Hosokawa clan that had long been based in Awa Province on the island of Shikoku. Almost immediately after this, the boy became entangled in a complex and bitter web of political intrigue.
