134.Toyama Castle Part1

A castle basically made using earthen walls and water moats

Location and History

Center of Ecchu Province

Toyama City started as the castle town of Toyama Castle and is the capital of Toyama Prefecture. The castle was first built by the Jinbo Clan in the first half of the 16th Century. It was in a flat area in the center of Ecchu Province, what is now Toyama Pref. The area was also the intersection of two of the major roads, the Hokuriku, and Hida Roads. It might have been dangerous to build a castle in such a place at that time. Many battles happened during this time, later known as the Sengoku Period. Warlords in the province usually lived in mountain castles like Masuyama Castle to protect themselves. In the case of Toyama Castle, it was protected by the Jintsu-gawa River and water moats surrounding the castle.

The location of the castle

The ruins of Masuyama Castle

Narimasa Sassa unifies Ecchu Province

Many warlords such as the Uesugi Clan, the Ikkoshu Sect, and the Oda Clan battled over Toyama Castle. Narimasa Sassa finally took over the castle and governed the whole Ecchu Province in 1582. However, he was against the ruler, Hideyoshi Toyotomi. Hideyoshi attacked the Ecchu Province in 1585. The castle was destroyed for the first time, after Narimasa surrendered to Hideyoshi in the same year. Hideyoshi gave Ecchu Province to Toshinaga Maeda who would be the founder of the Kaga Domain in the Edo Period. In 1605, Toshinaga handed over the head of the domain to his successor, and moved from Kanazawa Castle, the home base of the domain, to Toyama Castle for retirement. He had the power to govern the domain because the successor was still young. He rebuilt Toyama Castle as his new home base.

The portrait of Narimasa Sassa, owned by Toyama Municipal Folk Museum (licensed under Public Domain via Wikimedia Commons)
The portrait of Toshinaga Maeda, owned by Uozu Museum of History and Folklore (licensed under Public Domain via Wikimedia Commons)
Kanazawa Castle

Toshinaga Maeda completes Castle

It is said that Toshinaga completed the structure of Toyama Castle. The large Jintsu-gawa River flowed in the north of the Main Enclosure as a natural hazard. A floating bridge was built over the river, which would later become popular among the people. There was the Second Enclosure in the south, the Eastern Barbican Enclosure in the east, and the Western Enclosure in the west of the Main Enclosure to protect it. Each enclosure was independent. The enclosures were surrounded by a water moat. They were only connected to the Main Enclosure by an earthen bridge. These enclosures were basically made using earthen walls. They were partly covered with stone walls around the three main gates such as the front gate of the Main Enclosure. It is also thought the Main Hall was in the Main Enclosure and some turrets were built on the stone walls of the gates. The largest Third Enclosure was on the south of all other enclosures, which was used as the warriors’ houses. However, the castle was destroyed a second time when it was unfortunately burnt by an accidental fire in 1609 before Toshinaga had to move to Takaoka Castle.

The illustration of old Toyama Castle in Ecchu Province, owned by Kanazawa City Tanagawa Library, exhibited by Toyama Municipal Folk Museum
”Floating bridge in Toyama, Ecchu Province” from the series “Famous Places in the Sixty-odd Provinces” attributed to Hiroshige Utagawa in the Edo Period (licensed under Public Domain via Wikimedia Commons)
The ruins of Takaoka Castle

Home Base of Toyama Domain

In 1639, Toshinaga’s nephew, called Toshitsugu Maeda, was allowed to establish a subsidiary domain called the Toyama Domain. He once thought he could build a new castle but decided to repair and reuse Toyama Castle due to a financial issue. Instead, he built the outermost earthen walls and water moats to protect the castle town. Toshitsugu’s son, Masatoshi, promoted industries, especially a patent medicine. The success of the medicine resulted in the drug sellers of Toyama being known in the whole country. The domain also planned to build the Main Tower but gave up because of a financial issue again. Instead, they built the Chitose Hall in the Eastern Barbican Enclosure to sometimes allow to people to enter it for festivals. In addition, the castle suffered damage from fires, floods, and earthquakes again and again throughout the Edo Period. The domain struggled to restore or repair it. Simple earthen walls and water moats might have protected the castle from many of the disasters and made it easier to restore and maintain.

The statue of Masatoshi Maeda in Toyama Castle Park (licensed by Miyuki Meinaka via Wikimedia Commons)
The remaining front gate of the Chitose Hall

To be continued in “Toyama Castle Part2”

125.Kozukue Castle Part1

The castle in the center of the popular Kozukue Territory

Location and History

Castle along one of Kamakura Roads

Kozukue Castle was located in what is now the northern hilly area in Yokohama City, Kanagawa Prefecture. In the present Japan, Tokyo is the center of Japan including the Kanto Region. For that reason, many major roads gather in or spread from Tokyo. Some of them also go through the eastern seaside area of Yokohama City. However, before the Edo Period which started in the 17th Century, the center of the Kanto Region was Kamakura, called the Warriors’ Capital. Many major roads, called the Kamakura Roads, at that time also gathered in or spread from Kamakura. Kozukue Castle was near one of the Kamakura Roads and alongside Tsurumi-gawa River, which was an important spot for transportation.

The location of the castle

The present road network of the Kanto Region going to and from Tokyo (Source: Ministry of Land, Infrastructure and Transport)
The past road network of the Kanto Region going to and from Kamakura (Source: Tama City, adding the positions of Kozukue Castle and Kamakura)

“Kozukue Territory” and “Kozukue Group”

It is uncertain when Kozukue Castle was first built. The first appearance of the castle was after the Rebellion of Kageharu Nagao, who was against his master, the Uesugi Clan in 1478. The Toshima Clan who supported Kageharu used the castle, and Dokan Ota, a senior vassal of the Uesugi Clan beat them. After a while, the Hojo Clan, a great warlord used the castle again as a bridgehead for invading the Kanto Region in the 16th Century during the Sengoku Period. Even after the Hojo Clan was succeeded, they still considered the area around the castle as one of their important territories. They called the area “Kozukue Territory” like we call the area today, Yokohama City. They also called the group of the warriors who lived in the area “Kozukue Group”. Kozukue Castle was the center of the area and the group, and one of Hojo’s branch castles, which must have been more popular than we assume.

The portrait of Dokan Ota, owned by Daijiji Temple (licensed under Public Domain via Wikimedia Commons)
The portrait of Ujitsuna Hojo, the lord of the clan when they invaded the Kanto Region, owned by Odawara Castle (licensed under Public Domain via Wikimedia Commons)

Castle has Simple Layout

Kozukue Castle was built on the edge of a hill sticking out from the south towards Tsurumi-gawa River to the north. The layout of the castle was simple, having the large Western and Eastern Enclosures, divided by the slender Connecting Enclosure. They were all made of soil. However, these enclosures were surrounded by large deep dry moats. What kinds of buildings stood on the enclosures is still uncertain, but it is thought that some turrets were built on the earthen bases. In addition, some barbicans were built along the hill around the main portion.

The relief map around the castle

The imaginary drawing of Kozukue Castle (from the signboard at the site, adding comments)

Development and Abolition of Castle

In 1590, when the ruler, Hideyoshi Toyotomi invaded Hojo’s territory for his unification of Japan, Hojo ordered their branch castles to gather the warriors to their home base, Odawara Castle. That meant the branch castles including Kozukue Castle had to protect themselves with fewer defenders. The lord of Kozukue Castle decided to draft farmers to protect it. It is thought that the dry moats of the castle were also developed making them larger and deeper to protect the castle with fewer warriors and untrained defenders. This is what we can now see as the ruins of the castle. However, no battles happened then. The castle was open and finally abandoned after Hojo surrendered to Hideyoshi.

The Portrait of Hideyoshi Toyotomi, attributed to Mitsunobu Kano, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)
The dry moat of Kozukue Castle

To be continued in “Kozukue Castle Part2”

180.Okoh Castle Part1

The castle’s long history and the Chosogabe Clan

Location and History

Feature of Tosa Province

Okoh Castle was located what is now Nankoku City, Kochi Prefecture. The prefecture is one of the four prefectures in Shikoku Island, but separated by Shikoku Mountains from the other three northern prefectures. When the prefecture was called Tosa Province in the past, it was not easy to visit there. That’s why the province was sometimes used for one of the places for exile or escape. However, it has been easy to live for local people with a warm climate and abundant food.

The location of the castle

The relief map of Shikoku Island and the range of Tosa Province

Chosogabe Clan settled in Tosa and built Castle

Okoh Castle had been owned by the Chosogabe Clan during all its life. The clan has a very long history and it was said that their founder was a branch of the Hata Clan that came from Korea to Japan in the Ancient Times with advanced technologies such as civil engineering and silk industry. The Hata Clan spread them and moved from central Japan (now Kinki Region) to many local areas of Japan including what is now Nagano Prefecture where the founder of the Chosogabe Clan lived. The founder called Yoshitoshi Hata fought at Kyoto in the 12th Century, but was defeated, so he escaped from his enemies to Tosa Province. He finally settled near the provincial capital in the fertile Kacho Plain and changed his family name to Chosogabe by combining local land names. Okoh Castle was thought to be built on a mountain beside the plain at the same time.

The whole view of Okoh Castle Ruins (licensed by Saigen Jiro via Wikimedia Commons)

One of Chosogabe’s strengths was to have connections to central Japan such as serving the Hosokawa Clan, a senior vassal of the Ashikaga Shogunate and inviting the Ichijo Clan, a high class noble to Tosa Province as the provincial governor. As a result, the Chosogabe Clan became one of the seven ruling clans in Tosa in the first 16th Century. However, the others of the seven ruling clans including the Motoyama Clan were against the Chosogabe Clan, then they attacked and burned Okoh Castle in 1508. The trace of the fire was found in the ruins of the castle. The Chosogabe Clan was once defeated.

The Second Tier, one of the enclosures which include the trace of the fire

Motochika Chosogabe ruled Shikoku based in this Castle

The next lord of the clan, Kunichika Chosogabe came back to Okoh Castle in 1518 with the support from the Ichijo Clan. He got his power by organizing a soldier group called Ichiryo-Gusoku who were usually farmers, but also soldiers with a Set of Armour in emergency. After that, he took revenge on his enemies by taking them as relatives or battles with the Ichiryo-Gusoku group. Kunichika’s son, Motochika Chosogabe was succeeded in governing the whole Tosa Province in 1575. Okoh Castle had been the home base of the clan. It was a typical mountain castle with many tiers covering the mountain. However, it had some unique features coming from the Chosogabe Clan. It was thought that some turrets were built on stone foundations, using roof tiles made by craftsmen from Izumi Province (now part of Osaka Prefecture). Stones were piled inside the earthen walls of the Third Tier. Such structures were still rare at that time in the whole cuntory and were done by Motochika’s connection to central Japan.

The figure of a Ichiryo-Gusoku soldier, exhibited in Kochi Castle
The portrait of Motochika Chosogabe, owned by Hada Shrine (licensed under Public Domain via Wikimedia Commons)
The stone walls of the Third Tier

Abandoned after Unification of Japan by Hideyoshi Toyotomi

Motochika finally achieved the unification of Shikoku Island in 1585. However, the ruler, Hideyoshi Toyotomi was processing his unification of Japan at the same time. Hedeyoshi sent over 100,000 of modernized troops to Shikoku Island in the same year while Motochika had about 40,000 soldiers including farmers. Motochika had no other option but to surrender and was allowed to govern just Tosa Provence by Hideyoshi. He also moved his home base from Okoh Castle to Otaka-sakayama Castle (now Kochi Castle) in 1588 and finally Urado Castle beside Urado Bay in 1591. it was said that this transfer was instructed by Hideyoshi to prepare his Invasion of Korea in 1592. Okoh Castle was abandoned then.

The Portrait of Hideyoshi Toyotomi, attributed to Mitsunobu Kano, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)
The present Kochi Castle
The ruins of Urado Castle

To be continued in “Okoh Castle Part2”