Hosokawa Katsumoto (細川 勝元, 1430 – June 6, 1473) was one of
the Kanrei, the Deputies to the Shogun, during Japan's Muromachi
period. He is famous for his involvement in the creation of Ryōan-ji,
a temple famous for its rock garden, and for his involvement in the
Ōnin War, which sparked the 130-year Sengoku period. His childhood
name was Sumiakamaru (聡明丸).
His conflicts with his father-in-law, Yamana Sōzen, who resented the
power Hosokawa had as Kanrei, were among those that ignited the Ōnin
War in 1467. When the Shogun
Ashikaga Yoshimasa had a son in 1464,
Yamana took this as an opportunity to oppose Hosokawa further,
supporting the child as heir to the Shogunate. Hosokawa had always
worked closely with the Shogun's brother Ashikaga Yoshimi, and
supported his claim to the shogunate.
In 1467, open war broke out in the capital of Kyoto, between Hosokawa
and Yamana, who each commanded roughly 80,000 men. The Shogun declared
that the first to make war in the capital would be branded a rebel,
and so the two armies remained immobile for some time, but within a
few months, the tensions had risen too far, and war simply could not
be delayed any further. Hosokawa made the first obvious attack within
the capital, attacking the mansion of a Yamana general by the name of
Isshiki. Fighting erupted between the two camps, and over the course
of the next few days, many were killed, and many buildings destroyed,
either by the soldiers or by looters. Each army gradually carved out a
section of the city that they held and defended against the other;
Hosokawa's army came to be known as the Eastern Army, as Yamana's
so-called "Western Army" controlled western sections of Kyoto. But not
all the fighting took place within the city; Hosokawa sent men onto
the main roads, and into Yamana's home provinces, to prevent his
reinforcements from reaching the main battles.
Though Hosokawa attacked first, he convinced the Shogun to brand
Yamana, not himself, with the stigma of being a rebel against the
Shogunate. He even persuaded Yoshimasa to make him the general of the
official Shogunal attacks on Yamana, but failed to grant him any
tangible support. Some of Yamana's followers deserted, joining
Hosokawa's morally superior side, but many more switched sides as a
result of the work of Hosokawa's emissaries to the provinces where
Yamana and his allies drew their armies.
By New Year's of 1468, nearly a year after the war began, the fighting
tapered off. For much of that year, the two forces engaged in glaring
contests and limited sorties, both desiring to rebuild and to act only
defensively. Both spent the next several years in political, not
military, conflict, and in 1469, the Shogun named his son Yoshihisa,
his heir. But Hosokawa was weary of battle, and wished for peace.
However, by 1473, both Hosokawa and Yamana were dead.
Father: Hosokawa Mochiyuki (1400-1442)
Mother: daughter of Kyogoku Takamitsu
Wife: Yamana Haruko
Hosokawa Masamoto by Haruko
Akamatsu Masanori by Haruko
^ a b c d Sansom, George (1961). A History of Japan, 1334-1615.
Stanford University Press. pp. 217–229.
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