Nanokaichi Domain

Overview

Nanokaichi Domain (七日市藩, Nanokaichi-han) was a feudal domain of the Edo period (1603–1868), established on 2 February 1617, the third year of the Genna era (元和, Genna). It lay in Kanra district (甘楽郡, Kanra-gun) of Kōzuke Province (上野国, Kōzuke no kuni), the region that corresponds to modern Gunma Prefecture. The domain was administered from a jin'ya (陣屋) — a fortified headquarters, smaller than a castle — at Nanokaichi. Throughout its existence it was held by a junior branch of the Maeda clan (前田氏, Maeda-shi), the house that also ruled the great domain of Kaga.

History

The domain was founded in 1617, in the early decades of Tokugawa rule, when the shogunate was still settling the map of Japan into domains (han, 藩) held by lords (daimyō, 大名) who answered to the shogun in Edo. Nanokaichi was granted to a cadet line of the Maeda, separating it from the main Kaga inheritance and giving this branch its own territory and its own obligations to the shogunate.

Because the domain was ruled from a jin'ya rather than a castle, its lord ranked among the smaller daimyō of the Kantō region. The headquarters at Nanokaichi was the administrative and residential centre of the domain: the site held the daimyō's residence and its gardens, and parts of the jin'ya complex survive on the original ground.

Territory and Influence

Nanokaichi's lands lay in Kanra district, in the inland mountains of Kōzuke. The domain's seat is now part of the city of Tomioka (富岡市, Tomioka-shi) in Gunma Prefecture. The preserved site of the jin'ya, including the daimyō residence and gardens, is today part of Tomioka High School.

As a small domain held by a branch of the Maeda, Nanokaichi's weight in national affairs was modest. Its importance for the historical record is twofold: it represents the many small han into which Edo-period Japan was divided, each with its own lord, headquarters and administration; and it preserves a physical link to that system, since the residence and garden of its jin'ya remain on their original site.

The Name in Japanese

The domain's name is written 七日市藩. In kana it reads なのかいちはん; in romaji, Nanokaichi-han.

The name breaks down as follows:

• 七 — read なの (nano) in this word. It is the kanji for "seven". Japanese normally reads this character shichi or nana; the nano form is an older reading that survives in fixed compounds such as this one.
• 日 — read か (ka) here. The kanji means "day" or "sun". Its everyday readings are hi, nichi or jitsu; the ka reading is an archaic one, used in a small set of old place names and counters.
• 市 — read いち (ichi). It means "market" or "town". A place called ichi was originally a market settlement, and the character appears in countless Japanese place names.
• 藩 — read はん (han). It means "domain" — the territory and government of a daimyō under the Tokugawa shogunate.

Taken together, 七日市 (Nanokaichi) is a place name meaning, roughly, "seventh-day market" — a market held on the seventh day. The final 藩 (han) is the standard suffix attached to the name of any Edo-period domain, so Nanokaichi-han means "the Nanokaichi Domain". The reading of the first two characters is the part worth memorising: nano + ka is not how either kanji is read in modern everyday Japanese, which is exactly why the domain's name is a useful lesson in how place names preserve older layers of the language.

Legacy

The clearest legacy of Nanokaichi Domain is physical. The site of the jin'ya at Nanokaichi, in present-day Tomioka, still holds the daimyō residence and its gardens, preserved on the original ground and now incorporated into Tomioka High School. For a domain of such modest size, that survival is unusual and gives a direct view of how a small Edo-period lordship was housed and administered.

The domain also stands as a compact example of the han system itself: a territory defined in 1617, ruled by a branch of one of Japan's great clans, governed from a jin'ya rather than a castle, and folded into the modern prefectural map of Gunma after the Edo period ended in 1868.