was a remnant of the

Amago clan Amago (尼子) is a Japanese word meaning "child of a nun", and has various other uses: People * Amago clan, a Japanese daimyō clan * Amago Haruhisa (1514–1561), Japanese daimyō * Amago Katsuhisa (1553–1578), Japanese daimyō * Amago Kunih ...

, a powerful

feudal Feudalism, also known as the feudal system, was the combination of the legal, economic, military, cultural and political customs that flourished in Middle Ages, medieval Europe between the 9th and 15th centuries. Broadly defined, it was a wa ...

clan in the

Chūgoku region The , also known as the region, is the westernmost region of Honshū, the largest island of Japan. It consists of the prefectures of Hiroshima, Okayama, Shimane, Tottori, and Yamaguchi. In 2010, it had a population of 7,563,428. History '' ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

, backed up by

Yamanaka Yukimori , also known as Yamanaka Shikanosuke (山中鹿の介) or Shikasuke (鹿の介), was a Japanese samurai of the Sengoku period. He served the Amako clan of Izumo Province. Nussbaum, Louis-Frédéric. (2005)"Yamanaka Shikanosuke"in ''Japan Encyc ...

, a

vassal A vassal or liege subject is a person regarded as having a mutual obligation to a lord or monarch, in the context of the feudal system in medieval Europe. While the subordinate party is called a vassal, the dominant party is called a suzerain. W ...

of the clan. He was born to Amago Masahisa in 1553. In the following year, Katsuhisa's father and grandfather were killed by

Amago Haruhisa was a ''daimyō'' warlord in the Chūgoku region of western Japan. He was the second son of Amago Masahisa. Initially named Akihisa (詮久), he changed his name to Haruhisa in 1541 after Ashikaga Yoshiharu offered to let him use a ''kanji'' chara ...

, leading Katsuhisa to become a Buddhist monk. After the Amago clan was overthrown by

Mōri Motonari was a prominent ''daimyō'' (feudal lord) in the western Chūgoku region of Japan during the Sengoku period of the 16th century. The Mōri clan claimed descent from Ōe no Hiromoto (大江広元), an adviser to Minamoto no Yoritomo. Motonari w ...

in 1566, Amago Katsuhisa fled to the island of Oki. Later in 1568, Katsuhisa departed at

Oki Province was a province of Japan consisted of the Oki Islands in the Sea of Japan, located off the coast of the provinces of Izumo and Hōki. The area is now Oki District in modern Shimane Prefecture. Nussbaum, Louis-Frédéric. (2005). "''Awa no Kuni' ...

to restore the Amago clan with support from

and

Amano Takashige was a Japanese samurai and commander of the Sengoku period who served the Mōri clan. He was the keeper of Gassantoda castle which was the most important castle of the Mōri clan in the San'in region The is an area in the southwest of Honsh� ...

. In 1569, Katsuhisa entered Izumo from

and set-up a base in Shinyama Castle. He besieged Gassantoda Castle, but failed, owing to a fierce defense by Amano Takashige. In February 1570, Katsuhisa experienced a bitter defeat to

Mōri Terumoto Mōri Terumoto (毛利輝元, January 22, 1553 – June 2, 1625) was a Japanese ''daimyō''. The son of Mōri Takamoto, and grandson and successor of the great warlord Mōri Motonari, he fought against Oda Nobunaga but was eventually overco ...

at the Battle of Fubeyama, he fleeing to Kyōto. In 1574, Katsuhisa allied with

Yamana Toyokuni was a Japanese samurai and commander of the Sengoku period. He was the head of the '' Inaba Yamana clan'' and Shugo of the Inaba. In 1574, Toyokuni allied with Amago Katsuhisa for attempt an invasion to captured Tajima and Inaba provinces ...

to attempt an invasion to captured Tajima and

Inaba province was an old province of Japan in the area that is today the eastern part of Tottori Prefecture. It was sometimes called . Inaba bordered on Harima, Hōki, Mimasaka, and Tajima Provinces. The ancient capital, and the castle town, were at Tott ...

s. In 1578, Katsuhisa defending Kozuki Castle for

Oda clan The is a Japanese samurai family who were daimyo and an important political force in the unification of Japan in the mid-16th century. Though they had the climax of their fame under Oda Nobunaga and fell from the spotlight soon after, several ...

under

Toyotomi Hideyoshi , otherwise known as and , was a Japanese samurai and ''daimyō'' (feudal lord) of the late Sengoku period regarded as the second "Great Unifier" of Japan.Richard Holmes, The World Atlas of Warfare: Military Innovations that Changed the Cour ...

against the Mōri clan, but was attacked by

Kobayakawa Takakage was a samurai and daimyō (feudal lord) during the Sengoku period and Azuchi–Momoyama period. He was the third son of Mōri Motonari who was adopted by the Kobayakawa clan and became its 14th clan head. He merged the two branches of the Koba ...

and

Kikkawa Motoharu was the second son of Mōri Motonari, and featured prominently in all the wars of the Mōri clan. He became an active commander of the Mōri army and he with his brother Kobayakawa Takakage became known as the “Mōri Ryōkawa", or “Mōri's ...

Siege of Kōzuki Castle The occurred in 1578, when the army of Mōri Terumoto attacked and captured the castle of Kōzuki in Harima Province. Kōzuki had been taken by Toyotomi Hideyoshi the previous year and entrusted to Amago Katsuhisa. When it fell to the Mōri ...

, he was defeated, and committed suicide.

References

1553 births 1578 deaths Amago clan Daimyo Suicides by seppuku 16th-century suicides {{Daimyo-stub