* Image is for illustrative purposes only.Katō Yoshiaki
加藤嘉明
One of the Seven Spears of Shizugatake — The Sea Warrior Who Founded Two Domains
Description
The Seven Spears of Shizugatake
Born in 1563 in Mikawa Province (present-day Aichi Prefecture), Katō Yoshiaki served Toyotomi Hideyoshi as a young attendant before earning great martial distinction in the Battle of Shizugatake in 1583, becoming one of the "Seven Spears of Shizugatake." The Seven Spears were seven young warriors who distinguished themselves particularly in this battle. Yoshiaki, alongside Katō Kiyomasa, Fukushima Masanori, Katagiri Katsumoto, Hirano Nagatada, Kasuya Takenori, and Wakizaka Yasuharu, became a symbolic figure of the martial meritocratic faction of the Toyotomi regime.
His Achievements as a Naval Commander
The defining trait of Yoshiaki's military character was his superior naval command ability. During the 1585 Shikoku Campaign and the Korean campaigns of the Bunroku and Keicho eras (1592–1598), Yoshiaki commanded naval forces in numerous naval engagements. His naval activities during the Keicho campaign, in particular, were highly praised, and he demonstrated great valor in fierce battles against the Korean navy led by Admiral Yi Sun-sin. While bows, arrows, cannons, and ship-mounted artillery served as the primary weapons in naval warfare, Yoshiaki's essential character as a warrior—his courageous valor—was equally displayed on both land and sea.
Swords and the Appearance of a Warlord
As one of the celebrated Seven Spears of Shizugatake, Yoshiaki possessed famous swords befitting his station. As a prominent warlord under the Toyotomi regime, he undoubtedly wore swords presented to him by Hideyoshi and fine blades he had acquired—arms of the highest quality that reflected his martial renown. For Sengoku warlords, swords transcended mere weapons; they were instruments of self-expression and mementos proving one's valor on the battlefield. It is certain that in his fierce fighting at Shizugatake, in addition to his famous spear, he employed the katana in close combat, and it is said his swordsmanship matched a warrior worthy of the Seven Spears.
The Sekigahara Decision and the Founding of Matsuyama Domain
In the Battle of Sekigahara in 1600, Yoshiaki participated in the Eastern Army (Tokugawa Ieyasu's side) and distinguished himself. After the battle, he was enfeoffed with Iyo-Matsuyama, increased to 200,000 koku. As Yoshiaki undertook the construction of Matsuyama Castle, he devoted himself to the administration of Iyo Province; however, in 1627 he was transferred to Aizu with 400,000 koku, moving from Matsuyama to Aizu. Matsuyama Castle, which Yoshiaki founded (now in Matsuyama, Ehime Prefecture), remains one of the twelve surviving original castles, preserving his legacy to the present day.
The Foundations of Aizu Domain and His Later Years
Transferred to Aizu with 400,000 koku, Yoshiaki died in 1631. Following his death, Aizu domain underwent kaiai (abolition) by the shogunate due to succession issues in the Katō clan. Subsequently, Hoshina Masayuki (the half-brother of Tokugawa Iemitsu) was appointed to the domain, establishing the foundations of the Matsudaira clan of Aizu. The life of Yoshiaki, who left a profound mark in both Matsuyama and Aizu, exemplifies the typical trajectory of a Toyotomi meritocratic warrior rising from a young combatant at Shizugatake to a great daimyo.
Yoshiaki Among the Seven Spears
While Katō Kiyomasa and Fukushima Masanori are particularly renowned among the Seven Spears of Shizugatake, Yoshiaki holds a unique position by virtue of his exceptional abilities as a naval commander. Though each of the Seven Spears possessed distinct personalities and martial valor, they all commonly formed the military foundation of the Toyotomi regime, demonstrating the diversity of Toyotomi military strength. In Yoshiaki's case, his high versatility—excelling in both land and sea warfare—distinguished him from the other Spears, and Hideyoshi's high regard for this ability led to his frequent deployment in numerous campaigns.
Notable Swords
- Tachi received from Hideyoshi — a blade granted by Toyotomi Hideyoshi in recognition of Yoshiaki's exceptional valor at Shizugatake; the highest honor bestowed on one of the Seven Spears
- Naval commander's fighting sword — the blade worn by Yoshiaki as he led Hideyoshi's fleet against Yi Sun-sin's formidable Korean navy; the sword of a warrior equally at home on land and sea