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Tamaru Castle

Tamaru Castle is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tamaru Castle rather than just read about it. In short: Tamaru Castle (田丸城, Tamaru-jō) was a Japanese castle located in Tamaki, northern Mie Prefecture, Japan. At the end of the Edo period, Tamaru Castle was home to the Kuno clan, daimyō of Tamaru Domain and one of the hereditary karō to Kii Domain.

Tamaru Castle — main illustration
Tamaru Castle — illustration

Key takeaways

  • Tamaru Castle belongs to engineering; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Tamaru Castle to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Tamaru Castle from memory before moving on to harder problems.

Reference excerpt

Tamaru Castle (田丸城, Tamaru-jō) was a Japanese castle located in Tamaki, northern Mie Prefecture, Japan. At the end of the Edo period, Tamaru Castle was home to the Kuno clan, daimyō of Tamaru Domain and one of the hereditary karō to Kii Domain. The ruins are a Mie Prefecture Historic Site.

History Tamaru Castle is located on a hill between the Kushidagawa river and Miyawawa river in Watarai District of Ise Province. This area was a strategic junction between the Ise Honkaidō and the Kumano Kaidō, used by many pilgrims to the Ise Grand Shrine and Kumano Shrines. In the Muromachi period, southern Ise was ruled by the Kitabatake clan, who had supported Emperor Go-Daigo and the Southern Court during the Nanboku-chō period. In 1336, Kitabatake Chikafusa built a castle at this location initially to protect the eastern approaches to Yoshino, where the emperor had found refuge, but also access to the important shrines at Ise and Kumano. It was briefly taken by Ashikaga Takauji in 1342, but as recovered soon after by the Kitabatake. In 1569, Oda Nobunaga invaded Ise Province, defeating the Kitabatake, who were forced to accept Nobunaga's second son, Oda Nobukatsu, as their heir. In 1575, Nobukatsu formally succeeded to head of the clan, and the following year (at Nobunaga's bequest), he invited all of the prominent members of the Kitabatake clan and its cadet branches to a banquet, at which he had all of them killed. In 1576 Nobukatsu significantly rebuilt Tamaru Castle as his main residence. Nobukatsu commissioned the addition of stone walls and a tenshu, which were completed just before Nobunaga's construction of Azuchi Castle, which is also known to have featured a tower. As such, Tamaru Castle is thought to be the first Japanese castle to include a tower. However, Nobukatsu was less successful politically. In 1579 he attacked Iga Province without Nobunaga's approval and suffered a major defeat. In 1580, Tamaru Castle burned down, and Nobukatsu relocated his seat to Matsugashima Castle near the coast. After Nobunaga's assassination in 1582, he was briefly allied with Toyotomi Hideyoshi, but was deprived of his territories and in the end survived only a minor daimyō within the structure of the Tokugawa shogunate. After the start of the Tokugawa shogunate, the castle was awarded to Inaba Michito as the center of a 45,700 koku Tamaru Domain. Inaba had been a retainer of Toyotomi Hideyoshi, for whom he had constructed Fushimi Castle and had been awarded with large estates and permission to use the surname "Toyotomi". After Hideyoshi's death, he sided with Tokugawa Ieyasu at the Battle of Sekigahara. He had appointed a nephew as heir, but after the birth of a son, attempted to set the nephew aside. The nephew resisted, and Inaba Michito sent assassins to kill him. Inaba himself died under mysterious circumstances less than a year later. He was succeeded by the son, Inaba Yorimichi. However, the "curse" which was said to have killed his father was still active. After being transferred to Fukuchiyama Domain in 1624, he went insane, and after murdering 60 townsmen, was ordered to commit seppuku by the shogunate. Tamaru was transferred to the control of Tsu Domain and from 1619 was part of the Kii Domain under Tokugawa Yorinobu. Tamaru Castle was retained by Kii Domain despite the shogunate's official position of "one castle per domain", and was assigned to the Kuno clan, who became one of the hereditary karō clans supporting Kii Domain. The Kuno ruled for eight generations to the Meiji Restoration.

Structure of Tamaru Castle The castle is located on a small high with an elevation of around 30 meters, and occupies a roughly circular area 400 meters in diameter. The western half of the area is slightly higher in elevation and was the core area of the castle, containing the Honmaru (inner bailey), which was a rectangular area 100 by 50 meters. The tenshu was located at the northern edge, and a 25-meter square foundation base remains. To the south was the Ni-no-maru secondary enclosure, which was separated by a dry moat and bridge, with Masugata-style gates. To the north of the central area was the Kitanomaru enclosure. The whole was also surrounded by water-filled moats With the establishment of the Meiji government, the remaining structures of the castle were demolished; however, much of the stone walls, base of the tenshu and the moats remain relatively intact. The site is now a park, with portions occupied by the Tamaki Town Hall and Tamaki Town Tamaki Junior High School. The castle was listed as one of the Continued Top 100 Japanese Castles in 2017.

References

Literature De Lange, William (2021). An Encyclopedia of Japanese Castles. Groningen: Toyo Press. pp. 600 pages. ISBN 978-9492722300. Schmorleitz, Morton S. (1974). Castles in Japan. Tokyo: Charles E. Tuttle Co. pp. 144–145. ISBN 0-8048-1102-4. Motoo, Hinago (1986). Japanese Castles. Tokyo: Kodansha. ISBN 0-87011-766-1. Mitchelhill, Jennifer (2004). Castles of the Samurai: Power and Beauty. Tokyo: Kodansha. ISBN 4-7700-2954-3. Turnbull, Stephen (2003). Japanese Castles 1540–1640. Osprey Publishing. ISBN 1-84176-429-9.

External links

Tamaki Town official home page Mie Prefecture Tourist Information

Illustrations

Tamaru Castle illustration

Worked examples

Example 1 — a first encounter with Tamaru Castle

Start with the simplest possible case. Write down what Tamaru Castle claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tamaru Castle before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tamaru Castle ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tamaru Castle

In research
Tamaru Castle appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Tamaru Castle in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Tamaru Castle is common in secondary-school and first-year university syllabi. It links to neighbouring topics Buildings and structures completed in 1336, Castles in Mie Prefecture, Designated historic sites of Mie Prefecture, so understanding it makes those chapters shorter.
In everyday life
Look for Tamaru Castle outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Tamaru Castle in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Tamaru Castle means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Tamaru Castle out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tamaru Castle in simple terms?

Tamaru Castle (田丸城, Tamaru-jō) was a Japanese castle located in Tamaki, northern Mie Prefecture, Japan. At the end of the Edo period, Tamaru Castle was home to the Kuno clan, daimyō of Tamaru Domain and one of the hereditary karō to Kii Domain.

Why does Tamaru Castle matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tamaru Castle?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tamaru Castle.

Tags

  • Buildings and structures completed in 1336
  • Castles in Mie Prefecture
  • Designated historic sites of Mie Prefecture
  • Ruined castles in Japan
  • Tamaki, Mie

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