Inaba Yoshimichi

Who They Were

Inaba Yoshimichi (稲葉良通) was a samurai commander who lived from 1515 to January 5, 1589. He is remembered under a second name, Inaba Ittetsu (稲葉一鉄), and served two masters in succession: the Saitō clan of Mino province, and then the rising warlord Oda Nobunaga.

His career spans the violent century in which Japan's regional lords destroyed one another and a handful of survivors assembled the country under a single authority. Yoshimichi was born in the twelfth year of the Eishō era (永正, えいしょう), a nengō (年号, ねんごう) or era name used to count years under an emperor's reign, during the Muromachi period (1336–1573).

He belonged to the Mino Triumvirate (西美濃三人衆, Nishi Mino Sanninshū), a group of three senior Mino commanders whose collective defection reshaped the balance of power in central Japan. His father was Inaba Tsunonori (稲葉通則), and his mother was a daughter of Isshiki Yoshitō.

Life and Career

Yoshimichi was born into the Inaba family, a warrior house of Mino province, the region corresponding roughly to the southern half of modern Gifu Prefecture. As a young man he was known by the childhood names Hikoshirō (彦四郎) and later Hikoroku (彦六郎), the kind of alternating given names used by samurai boys before they assumed adult names.

He served the Saitō clan, the dominant house of Mino. By the 1560s the Saitō were weakened by internal quarrels, and Oda Nobunaga, based in neighbouring Owari, was pressing north. In 1567 Yoshimichi, together with Andō Michitari and Ujiie Bokuzen, agreed to abandon the Saitō and join Nobunaga's forces. That decision gave Nobunaga the foothold in Mino he needed, and it made the three men his most valuable new retainers.

Yoshimichi fought in the Siege of Inabayama Castle in 1567, the operation that finished Saitō resistance in Mino. In 1570 he took part in the Battle of Anegawa, where he led the reserve troops of Nobunaga's army. He went on to serve in the Siege of Ishiyama-Honganji, the Siege of Ichijōdani Castle, the Siege of Nagashima, the Battle of Nagashino, and the Kaga campaign under Shibata Katsuie.

After Nobunaga's death in 1582, Yoshimichi entered the service of Toyotomi Hideyoshi. He fought at the Battle of Shizugatake and at the Battle of Komaki-Nagakute, both of them contests among former Oda generals over the succession to Nobunaga's power. He died on January 5, 1589.

His household was bound tightly to the great families of the age. His principal wife was a daughter of Sanjōnishi Saneeda. One of his sons, Inaba Masanari, married Saitō Fuku, a daughter of Saitō Tatsuoki, the last effective head of the Saitō clan — a marriage that sealed the reconciliation between the Inaba and the house they had deserted. Among his other children were Inaba Shigemichi, Inaba Masamichi, Inaba Sadamichi and Inaba Yasu, along with daughters who married into the Marumō and Yamamura families.

Why They Matter

The Mino Triumvirate's switch to Nobunaga in 1567 is one of the small decisions with large consequences that recur throughout this period. Mino was the hinge between eastern and western Japan, and control of it allowed Nobunaga to march on Kyoto. Yoshimichi and his two colleagues delivered that province.

Yoshimichi's later career shows how a regional commander survived the collapse of one patron after another. He outlived the Saitō, served Nobunaga, and then transferred his loyalty to Hideyoshi without losing his lands or his standing. That adaptability was the practical skill that separated the samurai who endured from those who were destroyed.

His presence in the reserve at Anegawa and in the campaigns against the Ikkō-ikki, the Buddhist leagues that resisted warlord rule, places him in nearly every major engagement of Nobunaga's unification wars. He is a useful figure for understanding the middle rank of command: not a unifier himself, but one of the men whose service made unification possible.

The Name in Japanese

The full name is written 稲葉良通. It is read in kana as いなば よしみち, and in rōmaji as Inaba Yoshimichi. The family name comes first, as is standard in Japanese.

稲 (いな, ina) — the first character of the surname. It means "rice plant," the growing stalk in the paddy. Rice was the measure of wealth and the basis of taxation in premodern Japan, so it is a natural element in warrior surnames.

葉 (ば, ba) — "leaf." On its own the character is read は (ha); here it is voiced to ば because it follows another element inside a compound. Together 稲葉 means "rice leaves" and is the name of a place, from which the family took its surname.

良 (よし, yoshi) — "good," "fine," "excellent." It is a common element in male given names of the period, chosen for its auspicious sense.

通 (みち, michi) — "to pass through," "to go along," and by extension "way" or "path." It appears frequently in samurai names, often paired with 良 to form Yoshimichi.

The alternative name by which he is best known, 稲葉一鉄, is read いなば いってつ, Inaba Ittetsu. 一 (いっ, it) means "one," and 鉄 (てつ, tetsu) means "iron." The nickname suggests a man of single-minded, unyielding character, and it stuck more firmly than his formal name.

Legacy

The Inaba name survived Yoshimichi and prospered. His descendants became daimyō, lords of substantial domains, and the family held territory into the Edo period and beyond. The line he founded at Mino outlasted both the Saitō he abandoned and the Oda he served.

His reputation in later histories rests chiefly on the 1567 defection. Narratives of Nobunaga's rise treat the Mino Triumvirate as the moment when the Saitō collapse became irreversible, and Yoshimichi is named in that trio alongside Andō Michitari and Ujiie Bokuzen.

The nickname Ittetsu — "one iron" — carried into popular memory of the Sengoku period, the century of civil war that ended with national unification. He is remembered as a hard, dependable commander of the second rank: the kind of retainer on whom the great unifiers depended, and whose careers are studied for what they reveal about loyalty, calculation, and survival in a time when all three were constantly tested.