Amago Haruhisa (March 8, 1514 – January 9, 1561) was a powerful daimyō and warlord in the Chūgoku region of western Japan. Born as the second son of Amago Masahisa, he initially bore the name Akihisa, but in 1541, upon an offer from Ashikaga Yoshiharu, he adopted the name Haruhisa by incorporating a kanji character from Yoshiharu's own name.
Upon the untimely death of his father, Amago Masahisa, in battle, Haruhisa assumed leadership of the Amago clan in 1537, succeeding his grandfather. Eager to expand his territory, he launched a series of invasions, extending his influence as far as Harima. During his youth, he was known by the name Saburōshirō.
The Siege of Koriyama in 1540, pitting Haruhisa against Mōri Motonari, concluded in a humiliating defeat. This led to the defection of many of his retainers, who doubted Haruhisa's prospects for success. The subsequent year saw the passing of his grandfather, Amago Tsunehisa, and Ōuchi Yoshitaka initiated a counteroffensive to crush the Amago clan.
In the 1542–43 Siege of Toda Castle, Haruhisa successfully defended the castle. This victory not only bolstered his standing but also inspired the return of some of his earlier defectors. With sufficient forces gathered, he managed to repel the invasion and gradually solidified control over domains like Izumo, Hōki, Mimasaka, and Oki.
Following the death of Ōuchi Yoshitaka in 1551 due to the rebellion led by Sue Harukata, Haruhisa was offered lordship over eight domains by the Muromachi shogunate in 1552, four of which he already held in his firm grasp.
In his later years, Haruhisa made a sudden decision to eliminate his uncle Amago Kunihisa, along with the retainers under his command, collectively known as Shingūtō. This action, which initially led to a scarcity of experienced leaders, was likely a move by Haruhisa himself to consolidate his rule over the Amago clan, rather than a plot by Mori Motonari as depicted in certain fictional works.
After Sue Harutaka's defeat and death in the Battle of Miyajima, Haruhisa sought to claim Iwami, forming an alliance with the Ogasawara clan of Iwami to seize control of the Omori Silver Mine. This sparked a series of battles with no clear victor. In late 1560, while engaged in battle against Motonari, Haruhisa fell ill at Gassantoda Castle and passed away on January 9, 1561.
Amago Hisayuki, as documented in Unyo Gunjitsuki, remarked that Haruhisa was "Quick to act, yet lacked the strategic discipline of a seasoned general; eager for combat, yet not inclined towards forgiveness."
See also
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Shimazu Toyohisa
Shimazu Toyohisa (July 1570 – October 21, 1600), also known as Shimazu Tadatoyo, was a samurai of the Shimazu clan and the son of Shimazu Iehisa. He was the nephew of Shimazu Yoshihiro and held command over Sadowara Castle. Known for his valor, Toyohisa participated in numerous key battles of the late Sengoku period, earning recognition for his bravery and tactical acumen.
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Ikeda Terumasa
Ikeda Terumasa (January 31, 1565 – March 16, 1613) was a Japanese daimyo of the early Edo period, recognized by his court title, "Musashi no Kami," and known as the "Shogun of Western Japan." Terumasa, a distinguished military leader, participated in numerous significant battles during the late Azuchi-Momoyama period. His service at the Battle of Sekigahara earned him control over the Himeji domain. Originally named Araokojimaru, he was the son of Ikeda Tsuneoki and the brother of Ikeda Sen. He later became the heir to Ikeda Nobuteru and held Ikejiri Castle in Mino Province.
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Mori Tadamasa
Mori Tadamasa (1570 - July 31, 1634) was a notable military commander during Japan’s Warring States period and an early Edo-period daimyo. Initially, he governed Kawanakajima Domain in Shinano Province (modern-day Nagano Prefecture) and later became the first lord of Tsuyama Domain in Mimasaka Province (now northern Okayama Prefecture). He founded the Mori family line of the Ako Domain. Tadamasa’s family origins trace back to the Genji (Minamoto) clan, specifically the Kawachi-Genji branch from Kawachi Province (in present-day southeastern Osaka Prefecture), a lineage tied to Emperor Seiwa through his ancestor Yorisada Mori, a great-grandson of the famed Minamoto no Yoshiie.
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Sanada Masayuki
Sanada Masayuki (1547 – July 13, 1611) was a daimyo and prominent lord of Japan's Sengoku period. Head of the Sanada clan from Shinano Province, he served the powerful Takeda clan of Kai Province alongside his father and brothers during Takeda Shingen’s leadership. Following the Takeda clan's decline, Masayuki took charge of the Sanada, and despite limited resources, he established his clan as an independent power under the Toyotomi regime by navigating alliances with dominant clans such as the Tokugawa, Hojo, and Uesugi. Renowned as one of his era's greatest strategists, Masayuki achieved notable victories against the Tokugawa forces in the Battle of Kami River and the Siege of Ueda.
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Sanada Nobuyuki
Sanada Nobuyuki was a renowned samurai of the Sengoku period and the eldest son of daimyō Sanada Masayuki. He was the elder brother of the famous warrior Sanada Yukimura. Nobuyuki’s mother was Kansho-in, Masayuki's wife, and he was married to Komatsuhime (Inahime), the daughter of Honda Tadakatsu and the adopted daughter of Tokugawa Ieyasu. Nobuyuki also had two other wives: Seiin-in, his cousin, and Ukyo, the daughter of Tamagawa Hidemasa.
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Date Hidemune
Date Hidemune was a Japanese daimyō during the early Edo period, born in 1591 as the eldest son of Date Masamune, one of Japan’s most prominent feudal lords. His mother was Shinzo no Kata, a concubine, which affected his future prospects. As a young man, Hidemune lived under the care of Toyotomi Hideyoshi and was given the adult name "Hidemune," adopting one character from Hideyoshi's own name. Hideyoshi granted Hidemune the court rank of junior 5th, lower grade, along with the title of ji-jū, and appointed him as a page to his son, Toyotomi Hideyori.
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Tsutsui Junkei
Tsutsui Junkei (March 31, 1549 – September 15, 1584), the son of Tsutsui Junsho, was a daimyo who ruled over Yamato Province. In 1571, through the mediation of Akechi Mitsuhide, Junkei pledged his service to Oda Nobunaga.
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Oda Nobutada
Oda Nobutada (1557 – June 21, 1582) was a samurai and the eldest son of Oda Nobunaga, known for his active role in several battles during Japan's Sengoku period. He led armies under his father's command in campaigns against Matsunaga Hisahide and the Takeda clan.
