Korean History › Three Kingdoms
Goguryeo
37 BC (traditional) – AD 668· Empire, kingdom or state· Rulers & states
Mostly agreedGood evidence; some details, dates or numbers uncertain.
The largest and most militarily powerful of Korea's Three Kingdoms, ruling northern Korea and much of Manchuria until 668.
See it on the Korean History map →What happened
By tradition Jumong, a prince who fled Buyeo, founded Goguryeo (고구려) in 37 BC in the Hun River valley of today's Liaoning. Its capital moved to Gungnae-seong (Ji'an, on the Yalu) and, in 427, to Pyongyang. A mountain-fortress state of mounted warriors, it took Lelang in 313 and peaked under Gwanggaeto and Jangsu in the 400s. It defeated huge Sui and Tang invasions before falling to Silla and Tang in 668.
Why it matters
It shielded the peninsula from Chinese empires for centuries, and its name, shortened to Goryeo, gave the world the word 'Korea'.
How we know
The Samguk sagi, Chinese dynastic histories, the 414 Gwanggaeto Stele, and UNESCO-listed tombs and capitals in Ji'an (China) and around Pyongyang (North Korea).
Still debated
Whose history is it? China's Northeast Project (2002–2007) framed Goguryeo as a regional Chinese state; both Koreas see it as Korean, a dispute that still flares.
Inside this (7)
Connections (14)
▸Buyeo was the claimed ancestor of GoguryeoMostly agreed
The connection
Goguryeo's founding myth says Jumong grew up at the Buyeo court, fled jealous princes and founded his own kingdom. Chinese records add that Goguryeo was 'a separate branch of Buyeo' with similar language and customs. As Buyeo weakened, Goguryeo absorbed it entirely in 494.
When and how
Manchuria, 1st century BC (traditionally 37 BC); recorded on the Gwanggaeto Stele (414) and in Chinese histories.
How sure are we?
The Gwanggaeto Stele states Jumong came from North Buyeo; the Records of the Three Kingdoms notes shared language and customs.
Debates and open questions
Whether the descent is real or a royal claim to borrow prestige, and which Buyeo, North or East, is meant, are debated.
▸Goguryeo conquered the last of the Han commanderies (Lelang and others)Well documented
The connection
Goguryeo raided the commanderies for centuries, pushing Xuantu northwest. When China fragmented after 300, King Micheon seized Lelang in 313, and Daifang fell soon after, ending some 400 years of Chinese administration on the peninsula and opening the Daedong basin to Goguryeo.
When and how
Pyongyang region, 313–314; King Micheon of Goguryeo, while China's Western Jin was collapsing.
How we know
Samguk sagi and Chinese histories; dated Chinese-style brick tombs show some Lelang residents stayed on under Goguryeo rule.
Debates and open questions
How quickly Goguryeo truly controlled the area, and how Lelang's name was later revived in Liaodong for refugees, are debated.
▸Gwanggaeto the Great expanded GoguryeoWell documented
The connection
In about 22 years Gwanggaeto pushed Goguryeo's borders in every direction: south against Baekje, north and west into Liaodong and Manchuria against Later Yan, Khitan and Buyeo peoples, and southeast to rescue Silla. He left Goguryeo the strongest of the three kingdoms.
When and how
391–413, across Manchuria and the northern Korean peninsula, in campaigns the king often led himself.
How we know
The stele lists campaigns by year; the Samguk sagi and Chinese histories confirm key ones, such as the Liaodong fighting with Later Yan.
Debates and open questions
How firmly he held the lands he raided is unclear; the stele may present tribute or one-time victories as lasting conquests.
▸Buddhism in Korea came first to GoguryeoWell documented
The connection
Buddhism officially entered Korea in 372, when Former Qin, a northern Chinese state seeking allies, sent the monk Sundo with images and sutras to King Sosurim. Goguryeo built its first temples in 375 and used the faith, along with a new Confucian academy and law code, to strengthen the throne.
When and how
Goguryeo's capital Gungnae-seong (Ji'an), 372; King Sosurim and the monk Sundo, sent by Fu Jian of Former Qin.
How we know
Recorded in the Samguk sagi and Haedong goseungjeon; Buddhist motifs in 5th-century Goguryeo tombs confirm early spread.
Debates and open questions
Buddhism probably trickled in earlier; the Chinese monk Zhi Dun, who died in 366, reportedly wrote to a Goguryeo monk.
▸King Geunchogo of Baekje won a 371 victory over GoguryeoWell documented
The connection
After repelling a Goguryeo attack in 369, Geunchogo and his crown prince struck north in 371 with, records say, 30,000 troops and stormed Pyongyang fortress. Goguryeo's King Gogugwon was killed by an arrow. The blow began a long feud that Goguryeo avenged in 475 by taking Baekje's capital.
When and how
Pyongyang fortress, 371; King Geunchogo and Crown Prince Geungusu against King Gogugwon.
How we know
Both the Baekje and Goguryeo annals of the Samguk sagi record the battle and the king's death.
Debates and open questions
Which 'Pyongyang' was attacked, today's city or another fortress of that name, and the troop numbers are uncertain.
▸Battle of Salsu River under Eulji Mundeok defended GoguryeoWell documented
The connection
By destroying the Sui strike force sent toward Pyongyang, Salsu wrecked Emperor Yang's 612 invasion. Goguryeo also outlasted Sui attacks in 598, 613 and 614; the drain of men and money fed revolts that toppled Sui in 618.
When and how
612, at the Salsu River in northwestern Korea, with Eulji Mundeok commanding against the Sui generals Yuwen Shu and Yu Zhongwen.
How we know
The Book of Sui admits the disaster and the return of only a few thousand men; the Samguk sagi gives the Goguryeo side.
Debates and open questions
The real army sizes, and whether the Salsu was the Cheongcheon River or another stream, are debated.
▸Siege of Ansi Fortress turned back Tang's attack on GoguryeoMostly agreed
The connection
Taizong took several Liaodong fortresses in 645, but Ansi's long resistance pinned his army down into autumn. Short of supplies, he retreated with heavy losses. Goguryeo survived, and smaller Tang raids in 647–648 also failed, pushing Tang to seek an ally in Silla.
When and how
Summer to autumn 645, at Ansi in the Liaodong region (today's Liaoning, China); Taizong led in person against Yeon Gaesomun's Goguryeo.
How sure are we?
Chinese histories admit Taizong's withdrawal; the Samguk sagi agrees and adds Korean details.
Debates and open questions
Tang losses are uncertain: Chinese sources play them down, while Korean tradition enlarges them.
▸Goguryeo tomb murals depict life in GoguryeoWell documented
The connection
The murals are Goguryeo's own picture book: nobles in spotted robes and striped trousers, armored cavalry, mounted hunters, wrestlers, dancers, kitchens and storehouses. With so few Goguryeo texts surviving, they are the main visual record of how its elite lived, fought and dressed.
When and how
Tombs around Ji'an (China) and Pyongyang and Nampo (North Korea), 4th–7th centuries.
How we know
The original paintings survive in place, recorded in photographs and copies since the 1900s; inscriptions and tomb styles date them.
Debates and open questions
How far the scenes show real life rather than an idealized afterlife, and how much they borrow from Chinese styles, are debated.
▸Fall of Goguryeo ended GoguryeoWell documented
The connection
The capture of Pyongyang in 668 and King Bojang's surrender ended Goguryeo after some seven centuries. Tang ruled its land through a protectorate, but revolts broke out, its people scattered to Tang, Silla and Japan, and in 698 Balhae rose on its northern lands.
When and how
668, at Pyongyang; Tang under Li Ji, with Silla forces and the defector Yeon Namsaeng.
How we know
Chinese and Korean histories agree; epitaphs of Goguryeo exiles found around Luoyang, China, trace families taken to the Tang heartland.
Debates and open questions
China's 2002–2007 Northeast Project framed Goguryeo as a Chinese regional state; Korea sees it as Korean. The dispute is as much political as historical.
▸Balhae claimed succession to GoguryeoWell documented
The connection
Founded in 698 by former Goguryeo people and Mohe tribes, Balhae saw itself as Goguryeo's heir. In a 727 letter to Japan, King Mu wrote that Balhae had restored Goguryeo's old lands, and King Mun later styled himself 'King of Goryeo', Goguryeo's other name.
When and how
Manchuria and northern Korea, 698–926; letters to Japan's court from the 720s to 750s.
How we know
Balhae's diplomatic letters preserved in Japan's Shoku Nihongi; Goguryeo-style tombs, roof tiles and ondol heated floors at Balhae sites.
Debates and open questions
Whether Balhae was mainly a Korean or a Mohe state is contested; Chinese historians treat it as a regional Chinese polity, Korean historians as Korean.
▸Dae Jo-yeong, founder of Balhae is said to descend from GoguryeoDebated
The connection
Dae Jo-yeong led Goguryeo and Mohe refugees out of Tang-held Yingzhou, defeated a Tang army at Cheonmunnyeong, and founded Balhae in 698. The Old Book of Tang calls him 'of a separate branch of Goguryeo'; the New Book of Tang calls him a Sumo Mohe once subject to Goguryeo.
When and how
From Yingzhou, near today's Chaoyang in Liaoning, east to Dongmo Mountain in Jilin, 696–698.
How sure are we?
The two Tang histories disagree; Korean sources such as the Samguk yusa and later works stress his Goguryeo roots.
Debates and open questions
His ancestry is the crux of the Korean–Chinese dispute over Balhae; many scholars see a Mohe background shaped by long Goguryeo rule.
▸Goryeo took its name from GoguryeoWell documented
The connection
Goguryeo itself had shortened its name to Goryeo by the 5th century. Gung Ye's state was called Later Goguryeo, and Wang Geon kept the name Goryeo to claim Goguryeo's heritage and its old northern lands. He rebuilt Pyongyang as a Western Capital and pushed the border north. Through Goryeo, Western traders later learned the name 'Korea.'
When and how
918, when Wang Geon took the throne at Cheorwon; Seo Hui restated the claim to the Khitans in 993.
How we know
Chinese histories and Goguryeo inscriptions use the name Goryeo (高麗) for Goguryeo from the 5th century; the Goryeosa records Wang Geon's Pyongyang policy.
Debates and open questions
China's state-backed Northeast Project (2002–2007) argued Goguryeo was a Chinese regional state unrelated to Wang's Goryeo; Korean scholars reject this, and the dispute is political as well as scholarly.
▸Seo Hui argued Goryeo was the heir of GoguryeoWell documented
The connection
Xiao Xunning claimed that Goryeo had risen from Silla land, so the old Goguryeo territory belonged to Liao. Seo Hui answered that Goryeo was Goguryeo's successor, which was why it was named Goryeo and kept a capital at Pyongyang; by that logic even Liao's eastern lands were rightfully Goryeo's.
When and how
993, at the Khitan camp in northwest Goryeo; Seo Hui and the Liao general Xiao Xunning.
How we know
The Goryeosa's biography of Seo Hui records the exchange in close detail.
Debates and open questions
The dialogue survives only on the Goryeo side and may have been polished; China's Northeast Project disputes the continuity he claimed.
▸Samguk sagi (History of the Three Kingdoms) is the oldest surviving Korean history of GoguryeoWell documented
The connection
Goguryeo's own histories, such as the Yugi and the Sinjip of 600, are lost. The Samguk sagi's ten volumes of Goguryeo annals, plus biographies such as those of Eulji Mundeok and Yeon Gaesomun, are the fullest Korean account of the kingdom, blending lost Korean records with Chinese histories.
When and how
Compiled in 1145 at Kaesong by Kim Bu-sik's team, more than four centuries after Goguryeo fell in 668.
How we know
Its Goguryeo entries often match Chinese dynastic histories and the Gwanggaeto Stele, though they also differ in places.
Debates and open questions
How much of the Goguryeo annals comes from lost Goguryeo records rather than Chinese sources, and how reliable its early reigns are.