Itagaki Nobukata

Who They Were

Itagaki Nobukata (板垣信方) was a samurai of the Muromachi period, born in 1489 and killed in battle on 23 March 1548. He served the Takeda family, the warrior house that ruled Kai province in the mountains west of modern Tokyo, and he is remembered as one of the "Twenty-Four Generals of Takeda Shingen" — the corps of senior commanders who carried Takeda Shingen's wars across central Japan in the sixteenth century.

Nobukata belonged to the Itagaki clan, a warrior lineage that took its name from the district of Itagaki. His father was Itagaki Nobuyasu, and his own son, Itagaki Nobunori, followed him into Takeda service. Nobukata's career spanned the reigns of two Takeda lords: he served Takeda Nobutora, and then Nobutora's son Takeda Shingen. He was also counted among Shingen's Shitennō, the "Four Heavenly Kings" — a small inner circle of the most trusted Takeda retainers.

His name appears in surviving documents written with more than one set of kanji; the form 信形 is also found alongside 信方. Such variation was common for warriors of the age, when a name was written as often by a scribe's ear as by a fixed standard.

Life and Career

Nobukata was born in 1489, in the first year of the Entoku era. That placed him in the Muromachi period, the long stretch of Japanese history (1336–1573) when the Ashikaga shoguns held nominal authority in Kyoto while real power lay with regional warrior houses such as the Takeda.

His early service was to Takeda Nobutora, the head of the Takeda house. When Nobutora was displaced by his own son in 1541, Nobukata transferred his loyalty to the new lord, Takeda Shingen. He was not merely one of Shingen's generals: he was given charge of the young Shingen's upbringing, acting as a guardian and instructor to the heir before the heir became the most feared warlord of his generation. A retainer entrusted with the education of a future lord held a position of unusual intimacy and influence, and Nobukata's later standing in the Takeda councils rested partly on that role.

Through the 1540s he fought in Shingen's campaigns of expansion out of Kai province. He was present at the Battle of Odaihara, one of the engagements that extended Takeda power into neighbouring Shinano. He died on 23 March 1548 at Ueda, in Shinano, in the fighting of that year. His son, Itagaki Nobunori, survived him and continued in Takeda service.

Why They Matter

Nobukata's importance rests on two things: the education of Takeda Shingen, and his place in the command structure that made the Takeda army one of the most effective fighting forces of sixteenth-century Japan.

The Takeda house under Shingen became famous for its cavalry, its disciplined administration of conquered territory, and its long wars against the Uesugi and Hōjō houses. That machine was built by men like Nobukata — senior retainers who commanded contingents, governed districts, and advised the lord. His inclusion among the Shitennō marks him as one of the four retainers Shingen relied on most.

His role as the young Shingen's guardian gives him a second kind of significance. In a system where a lord's authority depended on the personal loyalty of his retainers, the man who shaped the heir's character shaped the house for a generation. Nobukata's death in 1548 removed one of the Takeda's most experienced commanders at the height of Shingen's expansion into Shinano.

The Name in Japanese

The name is written 板垣信方 and read いたがき のぶかた (Itagaki Nobukata).

板 — read ita here. It means "board" or "plank," a flat piece of cut timber.

垣 — read gaki here (the base reading is kaki, voiced to gaki in the middle of a compound). It means "fence," "hedge," or "enclosure." Together, 板垣 (Itagaki) means something like "plank fence" — a fence built of boards rather than brush. This was a place name before it was a surname, and warrior families commonly took the name of the district they controlled.

信 — read nobu. It means "trust," "faith," or "belief." This kanji was a gift-name element: Takeda lords distributed a character from their own names to favoured retainers, and 信 appears in the names of both Takeda Nobutora and Takeda Shingen (whose formal name was Harunobu, later Shingen). Nobukata's use of 信 signals his standing within the house.

方 — read kata. It means "direction," "side," or "way." In warrior names it was a common closing element, and it is the character that distinguishes 信方 from the alternative written form 信形, where the second character is 形 (kata), meaning "shape" or "form." The two versions sound identical when spoken; only the written character differs.

So the full name breaks down as: a place name (板垣, "plank fence") followed by a personal name (信方, "trust" + "direction"). The reading いたがき のぶかた is what a Japanese speaker would say aloud; the romaji is Itagaki Nobukata.

Legacy

Nobukata is remembered chiefly through his association with Takeda Shingen. The lists of Shingen's Twenty-Four Generals and of his Shitennō, compiled and repeated in later Edo-period chronicles and in modern popular history, keep his name in circulation among the small group of Takeda retainers that Japanese audiences recognise.

His death at Ueda on 23 March 1548 is the date by which his career is fixed in the record. The Itagaki name continued in Takeda service through his son, Itagaki Nobunori, and the family's fortunes remained tied to those of the house he had helped to build. For students of the Sengoku era, Nobukata stands as an example of the senior retainer class — the men who trained the lords, commanded the armies, and died in the field, and whose names survive mainly because the lords they served became famous.