Nonaka Family Main House

Nonaka Family Residence Main House: A Late-Edo Samurai Home in Matsushiro Castle Town

In the former castle town of Matsushiro, on the southern edge of present-day Nagano City, narrow lanes still trace the grid laid out four centuries ago by the Sanada lords. Quiet residential streets carry the names of the samurai who once walked them, and behind their long earthen walls a number of Edo-period houses still stand. The Nonaka Family Residence Main House (Nonaka-ke Jūtaku Shuoku) is one of these survivors — a large, dignified wooden home that has weathered nearly two centuries on Natsume-koji lane and was registered as a national Tangible Cultural Property in 2006.

For visitors drawn to the lived-in atmosphere of Matsushiro — beyond the famous castle ruins and the well-known Sanada Residence — the Nonaka house offers a quieter, more intimate encounter with the world of the middle-ranking samurai who actually ran a Japanese domain.

Matsushiro Castle Town and the Sanada Domain

Matsushiro grew up in the shadow of a fortress originally called Kaizu Castle, built in the 1560s by the Takeda clan as a forward base in their long contest with Uesugi Kenshin over the Kawanakajima plain. After the Tokugawa established peace, the strategic site was assigned a new role: in 1622, Sanada Nobuyuki, the elder of the famous Sanada brothers, was transferred from Ueda to take up residence as lord of a 100,000-koku domain. For the next 250 years, ten generations of Sanada lords governed northern Shinano from this castle.

A formal samurai quarter was laid out around the castle to house the retainers who served the new domain. One of these quarters was the Uraomachi district, established immediately after the Sanada transfer of 1622. Within it ran a lane called Natsume-koji — also known historically as Komeome-koji — and it is on this lane, on the northwest corner of a substantial plot, that the residence we now call the Nonaka house was built.

From the Hasegawa Magistrate's House to a Registered Cultural Property

Although the building takes its present name from the Nonaka family who own and care for it today, during the Edo period the property belonged to the Hasegawa family, retainers of the Sanada domain who served in posts including gun-bugyō (district magistrate). The gun-bugyō was a middle-ranking samurai office responsible for rural administration — overseeing villages, taxation, and disputes across the agricultural districts of the domain. The scale and presence of the surviving main house reflect that responsibility.

No founding plaque or building inscription has been preserved, so the exact year of construction is unknown. From the floor plan, structural details, and design vocabulary, however, scholars place the house firmly in the late Edo period — somewhere within a long window stretching roughly from the mid-eighteenth century to the early nineteenth. On October 18, 2006, the Agency for Cultural Affairs added the building to the national register of Tangible Cultural Properties (Buildings), recognising it as a substantial and well-preserved example of samurai domestic architecture in a former castle town.

Architectural Highlights

The Nonaka Family Residence Main House is a single-storey wooden building with a partial low mezzanine, a feature known as tsushi-nikai, traditionally used for storage and light occupancy. The roof is hipped (yosemune-zukuri) and clad in pan-tiles (sangawara-buki), giving the building the broad, settled silhouette typical of higher-status samurai houses. The footprint measures roughly nine and a half ken by six and a half ken — about seventeen by twelve metres — for a total floor area of 242 square metres.

At the centre of the north façade stands the shikidai, a stepped formal entrance porch reserved for receiving guests of rank. Behind it, the principal rooms open in a staggered, slightly offset arrangement: a ten-mat zashiki reception room together with three further chambers, designed to layer privacy and ceremony as a visitor moved deeper into the house. A small four-and-a-half-mat tea room projects from the east gable, signalling the cultivated interests of the household. Even seen only from the lane, the proportions, the deep eaves, and the disciplined geometry of the façade convey the dignified bearing expected of a samurai residence.

Why This House Matters

Many of Japan's most-visited historic houses belong to either the highest or the most humble levels of society — daimyo palaces on the one hand, preserved farmhouses on the other. Surviving residences from the broad middle stratum of the warrior class are far rarer, and rarer still as a continuing presence within an actual former castle town. The Nonaka residence is significant because it embodies precisely that middle layer: a sizeable, well-built, decorous home of the kind that housed the administrators who made daily life in a domain function. Together with the other registered and designated samurai houses of Matsushiro, it allows visitors to read the social hierarchy of an Edo-period castle town in built form, walking from one rank to another along the original streets.

Visiting the House

The Nonaka Family Residence Main House is a privately owned property and is not open to the public. The building can be appreciated only from the lane outside, where the long roofline, tiled hip, and dignified street presence are clearly visible. Visitors are kindly asked to enjoy the residence from public space, to keep their voices low, and to respect the privacy of the household and neighbours who live in this historic district.

Even without entering, the building rewards a slow walk past — and it can easily be combined with the other historic homes of Matsushiro, several of which are fully open to visitors and offer the chance to step inside an Edo-period samurai dwelling.

Around Matsushiro: A Walkable Castle Town

Matsushiro is best explored on foot. Within a comfortable walking radius of the Nonaka residence, several major historic sites bring the world of the Sanada domain to life:

• Matsushiro Castle Ruins — the heart of the former domain, with restored gates, stone walls, and earthworks, and one of Nagano's most loved cherry-blossom spots in mid-April.
• Sanada Residence (Sanada-tei) — a rare surviving daimyo residence built in 1864, with its main hall, formal gate, storehouses, and garden largely intact.
• Sanada Treasure Museum (Sanada Hōmotsukan) — heirlooms of the Sanada family, including arms, lacquerware, paintings, and correspondence from figures such as Toyotomi Hideyoshi and Tokugawa Ieyasu.
• Bunbu Gakkō — the domain school, founded in 1855, where Matsushiro samurai trained in both literary and martial arts.
• Former Yokota Family Residence — a nationally designated Important Cultural Property and one of the most complete middle-rank samurai estates in Japan, fully open to visitors.
• Former Higuchi Family Residence — the home of a samurai who served as metsuke (inspector) to the Sanada lords, now managed as a community visitor centre.
• Yamadera Jōzan Residence — known for its impressive long-house gate and serene garden fed by a stream.
• Site of Sakuma Shōzan's Home — connected to the influential late-Edo thinker who shaped Japan's response to the West.