Korean History › Three Kingdoms › Goguryeo
Gwanggaeto the Great
r. 391–413· Person· Rulers & states
Well documentedSolid records, physical evidence or scientific consensus.
Goguryeo's 19th king, whose campaigns made it the dominant power of northeast Asia around AD 400.
See it on the Korean History map →What happened
Gwanggaeto the Great (광개토대왕) took the throne at about 17 and ruled 391–413. His title means 'broad expander of territory.' He forced Baekje's king to submit in 396, sent an army south in 400 to rescue Silla from Wa (Japanese) and Gaya forces, took the Liaodong region from the Later Yan state, and subdued Khitan, Sushen and Eastern Buyeo peoples. His reign name, Yeongnak ('Eternal Joy'), is the first known Korean one, a claim of equal standing with Chinese emperors. He died at 39.
Why it matters
He gave Goguryeo control of Manchuria and the northern peninsula, a high-water mark that later Koreans, from Goryeo to modern nationalists, looked back to.
Legacy and how we know
Mainly his stele, erected in 414 and still standing in Ji'an, China; also the Samguk sagi (1145) and Chinese dynastic histories, which give a shorter, less glowing account.
Still debated
How far his rule actually reached, and how much of the stele's account is royal boasting, are debated.
Inside this (1)
Connections (4)
▸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.
▸Gwanggaeto Stele records the deeds of Gwanggaeto the GreatWell documented
The connection
The stele is Gwanggaeto's official record, set up by his son's court the year after his death. It praises his virtue and lists his campaigns year by year, with counts of fortresses and villages taken. As a royal monument, it shows his reign as Goguryeo wanted it remembered.
When and how
Erected in 414 at Gungnae, near Gwanggaeto's tomb, in today's Ji'an, Jilin, China.
How we know
The text names the king, gives dates, and matches events in Chinese records and the Samguk sagi.
Debates and open questions
Which nearby tomb is Gwanggaeto's own, the Taewangneung or the so-called General's Tomb, is debated.
▸King Jangsu of Goguryeo succeeded Gwanggaeto the GreatWell documented
The connection
Jangsu, Gwanggaeto's eldest son, inherited a newly enlarged Goguryeo in 413. Where his father fought mostly to the north and west, Jangsu turned south, moving the capital to Pyongyang and pressing Baekje and Silla, while keeping peace with China through diplomacy.
When and how
413, at Gungnae; Jangsu ruled until 491, far outliving his father, who died at 39.
How we know
The Samguk sagi and Chinese histories record the succession; Chinese courts granted Jangsu titles soon after.
Debates and open questions
Historians debate how much of Goguryeo's 5th-century strength was Gwanggaeto's legacy and how much Jangsu's own policy.
▸Gwanggaeto the Great sent troops in 400 against Gaya confederacyMostly agreed
The connection
In 400, answering Silla's plea, Gwanggaeto sent 50,000 troops south. According to his stele, they drove off the Wa (Japanese) attacking Silla and pursued them to a fortress of Imna Gara, a Gaya state, which surrendered. The blow weakened Geumgwan Gaya around Gimhae, and leadership in Gaya shifted inland.
When and how
400, in Silla and the Nakdong River delta near Gimhae.
How sure are we?
The stele records the campaign; Goguryeo-style artifacts in southern tombs and the decline of Gimhae's elite cemeteries after about 400 fit it.
Debates and open questions
Who the Wa were, how many came, and how badly the campaign really hurt Gaya are debated.