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Horikawa Lab
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A lab that reads the Nanbokucho civil wars and the Muromachi shogunate's rule over the provinces through historical sources.

AboutAbout the lab
Reading medieval Japan through historical sources.
The Horikawa Lab studies the history of the period known as Japan's "medieval" era (11th to 16th centuries).
It is especially interested in the Nanbokucho civil wars of the 14th century and the social changes of that time.
Prof. Horikawa has been involved in surveying and researching historical sources on Japanese history and publishing collections of them at the Historiographical Institute, and in recent years has also worked on developing and managing historical databases.
The lab is also interested in research on Japanese history conducted outside Japan.
Key terms
- Nanbokucho civil wars
- A 14th-century conflict in which the imperial court split into the Southern Court and the Northern Court, and fighting continued in many parts of the country
- Historical sources
- Materials such as old documents, diaries, and letters that serve as clues for learning about past events
- Digital humanities
- A field that brings database and computer technologies into research in the humanities, such as history and literature
ResearchResearch themes
The lab studies medieval Japan, especially the Nanbokucho civil wars of the 14th century and the social changes of that era. It also works on surveying and researching historical sources on Japanese history and on developing historical databases.
*Illustrative imageThe Nanbokucho Civil Wars and the Muromachi Shogunate
Prof. Horikawa's doctoral dissertation examined how the Muromachi shogunate's system for ruling the provinces was formed and how it developed. Recently, he has been closely reading letters left by the warrior Imagawa Ryoshun to analyze what the Nanbokucho civil wars were actually like in the regions.
*Illustrative imageSource Surveys and Databases
The lab is involved in surveying and researching historical sources on Japanese history and publishing collections of them. It also takes part in developing and managing the historical databases provided by the Historiographical Institute, and from the perspective of a working historian, it is interested in digital humanities as well.
*Illustrative imageJapanese History Research Outside Japan
The lab is also interested in research on Japanese history conducted outside Japan. Prof. Horikawa co-edited a collection of studies by overseas scholars of medieval Japanese history that considers where "Japanese history," national history, and foreign history intersect.
MembersFaculty
- Associate ProfessorYasufumi HorikawaPublications ↗
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Letter from Madenokoji Nobufusa” 万里小路宣房 / Public domain (cropped)
- The Nanbokucho Civil Wars and the Muromachi Shogunate: “Go-Uda Toji Letter” Go-Uda / Public domain (cropped)
- Source Surveys and Databases: “Book scanner digitization National library of the Czech republic 2” Skot / CC BY-SA 4.0 (cropped)
- Japanese History Research Outside Japan: “Imari-ware Plate with Map of Japan WDL9929” Gyōki, 668-749 / Public domain (cropped)
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