A warlord's kingdom that declared its own king a living Buddha, grew to hold most of the peninsula's north and east, and collapsed when its officers deposed a ruler who had turned on his own wife and sons over doctrine.
The central peninsula from the Han River basin north and east, including former Goguryeo territory
Capitals
Ch'ŭl-wŭnfrom 905
Founder
Kung-yer. 905–918
Peak-era ruler
Kung-yer. 905–918
Last ruler
Kung-yer. 905–918
Administration
Old Korean
Writing system
none recorded
How it ended
internal usurpation918Hulbert, The History of Korea, Volume I (1905)
How it was governed
1 of 4 coded
Army raised byHow the fighting force was recruited, not how it fought.
No cited figure
Revenue fromWhat the state lived on. The values are unranked: the field cannot express which mattered most.
No cited figure
Succession byThe rule in force, not the outcome. A rule repeatedly violated is still the rule.
No cited figure
Right to rule fromThe ground publicly asserted — on coins, in the khutba, in titles.
divine sanction
A mandate from above — heaven, or a claim to be mahdi or imam
Hulbert, The History of Korea, Volume I (1905)
Each line is drawn from a source that addresses the question directly. A line reads No cited figure where no source consulted does — never because the answer seemed obvious.
Turning points
3 hinges
905The founding of Ma-jin at Ch'ŭl-wŭncapital move
Nine years after first seizing territory in the north and four after proclaiming himself a king without yet naming a state, Kung-ye gave his rule a fixed seat and a formal name, dividing administrative offices among his own followers - by which point most of the peninsula's north and east, including the young Wang-gön's own territory, already answered to him.
Hulbert, The History of Korea, Volume I (1905)
911Kung-ye becomes the Buddhaconversion
Renaming his kingdom Tă-bong, Kung-ye proclaimed himself the living Buddha Mi-ryŭk, dressed the part and began enforcing his own writings as canon - a religious claim that, rather than strengthening his own authority, marked the point his subjects and officials began to regard him as unfit to rule.
Hulbert, The History of Korea, Volume I (1905)
918The palace coupsuccession crisis
Fearing for their own lives after Kung-ye's murder of his wife and sons, his officials seized Wang-gön by force, carried him to the palace against his own stated wishes and proclaimed him king in Kung-ye's place; the deposed ruler was run down and executed before the day was out.
Hulbert, The History of Korea, Volume I (1905)
Chapters
3 in order
A king's son thrown from a window
Drafted from Hulbert, The History of Korea, Volume I (1905)formation
Kung-ye was born to King Hŏn-gang of Silla by a concubine, on what
tradition holds to be the least auspicious day of the year, already
possessed of teeth at birth. The king ordered the infant destroyed and
had him thrown from a window; a nurse caught him and raised him in
hiding, accidentally blinding one of his eyes in the process. He grew up
a monk, ill-suited to monastic life, and drifted into the camp of a
bandit chief named Ki-hwŭn before finding his true calling under a
second bandit leader, Yang-gil, at Puk-wŭn.
A lieutenant who outgrew his master
Kung-ye's own talents found room to grow under Yang-gil in a way they
never had as a monk. He overcame the districts of Ch'un-ch'ŭn, Nă-sŭng,
Ul-o and O-jin, and by 896 was operating on a far larger scale, seizing
ten districts near Ch'ŭl-wŭn and putting a young lieutenant named
Wang-gön in charge of them. Success bred ambition: he styled himself
"Prince," began appointing his own prefects, and in 901 proclaimed
himself king outright — driving the point home by slashing with his own
sword a painted image of Silla's king that hung in a monastery.
A capital, a name, a kingdom
Kung-ye ruled four more years as a self-declared king without a state to
match the title. That changed in 905, when he built a capital at
Ch'ŭl-wŭn, named his kingdom Ma-jin and distributed formal offices among
his own followers — the acts that turned a warlord's growing following
into an administered state. By this point his reach already extended
across most of the north and east, close enough to Silla's own capital
that the court there had nothing left to do but hope its two rebel
neighbors, Kung-ye in the north and Kyŏn Hwŏn in the south, might
destroy each other before either reached Kyŏngju itself.
A king who declared himself the Buddha
Drafted from Hulbert, The History of Korea, Volume I (1905)peak
By 909 Kung-ye's kingdom had reached its widest extent, its standards
planted across the whole of the north and east to within a hundred and
twenty miles of Silla's own capital. That year he called Silla outright
"the Kingdom to be Destroyed" and set Wang-gön, his own most capable
general, to work as military governor of the southwest — fitting out
ships to subdue neighboring islands and pressing a running campaign
against Kyŏn Hwŏn's rival kingdom in the south, a campaign Wang-gön won
with almost total consistency.
A new name for a new claim
In 911 Kung-ye renamed his kingdom Tă-bong. The change, the source
suggests, reflected a religious absorption that had by then overtaken
him entirely: he proclaimed himself the Buddha Mi-ryŭk, dressed as a
high priest, kept censers burning wherever he went, and made both his
sons formal Buddhists alongside him. He wrote a scripture of his own and
had a monk executed for refusing to accept it as canonical — a ruler no
longer content to hold territory, but determined to hold doctrine as
well.
A general who kept his distance
As Kung-ye's religious claims hardened into open cruelty and
caprice, military authority slid further into Wang-gön's own hands
almost by default; Wang-gön, for his part, made a habit of requesting
posts as far from court as possible, keenly aware that a rising general
too visible at his king's side invited exactly the jealousy that was
already consuming Kung-ye's judgment. The kingdom that had briefly
looked capable of unifying the peninsula under a single Buddha-king was,
by its own ruler's hand, already turning against itself.
A mirror with two kings in it
Drafted from Hulbert, The History of Korea, Volume I (1905)end
Kung-ye's descent from eccentric faith into outright madness accelerated
in his final years. When his own wife tried to dissuade him from his
Buddhist pretensions, he heated an iron to white heat and used it on her
body, accusing her of adultery; he went on to kill both of his sons and
a number of the people closest to him. He was, the source says, "hated
as thoroughly as he was feared" — and by 918 he sensed it himself, aware
that his own army had transferred its loyalty entirely to Wang-gön.
An accusation turned into a compliment
Fear made Kung-ye reckless rather than cautious. He summoned Wang-gön to
the capital and accused him outright of conspiracy, claiming to know it
through his own Buddha-nature. When Wang-gön, tipped off by a
sympathetic clerk who deliberately dropped a pen beside him, confessed
to a plot that had never existed, Kung-ye took the false confession as
proof of his own supernatural insight and rewarded him with gifts
instead of punishment — a king so lost in his own delusion that he
could not recognize the danger standing in front of him even when it
confessed to his face.
A throne seized rather than offered
Kung-ye's own officials had less patience than his general. Certain that
they would share the fate of his murdered wife and sons if nothing
changed, they begged Wang-gön to seize power himself; when he refused
on principle, his own wife joined the officials in overruling him, and a
group of them carried him bodily into the palace and proclaimed him king
over his own objections. Kung-ye fled the city he had built, naked and
alone, and was run down and beheaded at Pu-yang before the day was out.
A prophecy read backward
Tradition later supplied the change with an omen to match: a mirror,
bought from a Silla man by a Chinese merchant and eventually presented
to Kung-ye himself, was said to bear an enigmatic verse that a court
scholar decoded only after the fact — "the green forest," Song-do,
where a king would rise, and "black metal," Ch'ŭl-wŭn, where a king
would fall. Whether the mirror's riddle came before the coup or was
fitted to it afterward, its solution matched the outcome exactly: a
kingdom built on one man's claim to divinity ended the moment his own
army stopped believing him.
Kung-ye's own officials, fearing for their lives after his escalating cruelty toward his own family, carried Wang-gön to the palace by force and proclaimed him king in Kung-ye's place; Kung-ye fled the capital naked and was caught and beheaded at Pu-yang.
Derived from cited spans, not from a separate source. Where both spans are ranges and they meet only on the widest reading of each, the pair is listed as possible rather than resolved to one answer. Unlinked entries are here for scale and are not written up.
Extent
The historical-basemaps snapshots are world maps at fixed years, and none of the ones falling inside this polity's lifetime names it among the polities it draws.
Rating
Four axes, all computed from cited numbers and never from editorial judgement. Percentiles are against every polity written up here — 280 of them — plus 50 more included for scale. Absolute figures. A missing axis is excluded from the total rather than counted as zero.
Reach
No cited figure
Longevity
13 years
2nd percentile
Demographic weight
No cited figure
Influence
Three separate counts. This site never publishes a single influence number of its own; the sliders on the rankings view fuse them only in your view.
Descendant scripts
0
Religions carried
0
Successor claims
0
Weighted total
19th percentile
computed from 2 of 4 axes, renormalised across the axes that have figures. A polity with two documented axes is not penalised against one with four.