Kagawa Chikakazu

Who They Were

Kagawa Chikakazu (香川親和) was a samurai of the Sengoku period, the long era of civil war that ran from the mid-fifteenth century until the end of the sixteenth. He was born in 1567 in Tosa Province, on the island of Shikoku, the smallest of Japan's four main islands. He was the second son of Chōsokabe Motochika, the warlord who was in the process of unifying Tosa and then all of Shikoku under his own banner.

Chikakazu is remembered less for battles he won than for the position he occupied: he was the adopted heir of the Kagawa clan, a family whose castle at Amagiri he was meant to inherit. That adoption made him a piece on a very crowded board, and the story of his short life is largely the story of what his father decided about him.

Life and Career

Chikakazu was born in 1567, in the tenth year of the Eiroku era (永禄, えいろく). His father, Chōsokabe Motochika, was then consolidating power in Tosa Province, and his mother was Motochika's principal wife. As a second son, Chikakazu was not the obvious heir to the Chōsokabe house, and Motochika used him the way Sengoku fathers commonly used younger sons: as a bridge to another family.

Chikakazu was adopted by the Kagawa clan and installed at Amagiri Castle, taking the Kagawa name. Adoption of this kind was a standard political instrument. A family without a suitable heir gained a successor; the adopting father gained an ally, a garrison, and a claim. For a boy of Chikakazu's rank, it also meant a future as the head of a house in his own right rather than as a subordinate within his birth family.

That future narrowed sharply after the death of Chōsokabe Nobuchika, Motochika's eldest son and chosen successor, at the Battle of Hetsugigawa. With the heir dead, the succession to the Chōsokabe clan was open. Toyotomi Hideyoshi, by then the dominant figure in Japan, advised Motochika to name Chikakazu as his successor. Motochika declined. He chose instead his favoured son, Chōsokabe Morichika.

The decision left Chikakazu where he had been: head of the Kagawa, not of the Chōsokabe. He died in 1587 at the age of twenty, of illness, at Okō Castle. He did not die in battle, and he did not live to see his father's domains stripped away by Hideyoshi's campaign against Shikoku.

Why They Matter

Chikakazu matters chiefly as a case study in how succession worked — and failed to work — in a Sengoku warrior house. The advice of Toyotomi Hideyoshi, the most powerful man in Japan, was not enough to overturn a father's preference. Motochika's choice of Morichika over Chikakazu is one of the small decisions that shaped the Chōsokabe clan's final years, and it is recorded precisely because it ran against the recommendation of the era's paramount lord.

His life also illustrates the mechanics of adoption among warrior families. Chikakazu held the Kagawa name, lived at a Kagawa castle, and was expected to continue a Kagawa line, while remaining the son of Chōsokabe Motochika. A samurai in this position carried two identities at once, and the tension between them is exactly what the succession dispute brought into the open.

Finally, Chikakazu's death at twenty, from illness rather than combat, is a reminder of how few Sengoku warriors died the way the romances suggest. Disease killed heirs as reliably as sieges did, and a house could lose a generation in a single sickroom.

The Name in Japanese

The name is written 香川親和. It is read in kana as かがわ ちかかず, and in romaji as Kagawa Chikakazu. The family name comes first, as is standard in Japanese.

香 (か, ka) — "fragrance," "incense," "a pleasing smell." It is the first character of the surname. The same character appears in the name of Kagawa Prefecture on Shikoku, though the historical Kagawa clan and the modern prefecture are separate things.

川 (がわ, gawa) — "river." Read alone, this character is かわ (kawa); when it follows another element in a compound, it voices to がわ (gawa). The surname 香川 therefore means something like "fragrant river." Rendering 川 as がわ rather than かわ is a regular sound change in Japanese compounds, and it is the reason the romaji shows a g where the dictionary form of the character has a k.

親 (ちか, chika) — "parent," "intimate," "close," "to become familiar with." This is the first element of the given name. It is a common component of male given names in warrior families, and it is worth noting that the same character appears in the name of Chikakazu's father, Chōsokabe Motochika (長宗我部元親), where it is read ちか as well. Sharing a name element with a parent was a normal way of marking lineage.

和 (かず, kazu) — "harmony," "peace," "to blend." This is the second element of the given name. It is a very frequent closing element in Japanese male names, where it is usually read かず (kazu). The character also carries a strong cultural charge: 和 is the character used in 和語 (わご, wago), native Japanese words as opposed to Sino-Japanese ones, and in 和歌 (わか, waka), classical Japanese poetry.

Put together, the given name 親和 reads as a two-element male name of the period, and the surname 香川 marks the house Chikakazu was adopted into. He is also referred to as Chōsokabe Chikakazu, using his birth family's name, which reflects the double affiliation that defined his position.

Legacy

Chikakazu left no lasting institutional mark. He died young, before the Chōsokabe clan's fortunes collapsed, and he never ruled the Chōsokabe domains. What survives of him is a name in the genealogical record, a castle, and a decision.

That decision is the one attached to him. When the succession to the Chōsokabe clan opened after Nobuchika's death at Hetsugigawa, Toyotomi Hideyoshi urged Motochika to pass the house to Chikakazu. Motochika gave it to Morichika instead. Chikakazu died at Okō Castle in 1587, at twenty, of illness. The Kagawa line he was adopted to continue, and the Chōsokabe succession he was passed over for, both passed out of his hands within a few years of his death.