Taejo of Goguryeo

Taejo was the sixth monarch of Goguryeo. Goguryeo was the northernmost of the Three Kingdoms of Korea. He ruled from AD 53 to 146. His reign changed the young state into a powerful kingdom. He helped it grow much larger in size. He also helped it become a centrally ruled state. This means the king had more direct control over the land.

Taejo began his rule when he was only seven years old. His father was Go Jaesa. Jaesa was the head of the Go house. This was part of the Gyeru lineage. The Gyeru was one of five powerful houses in the royal court. Because Taejo was a child, his mother acted as regent. A regent is a person who rules on behalf of a young king. This helped the kingdom stay stable during his early years.

To strengthen his power, Taejo reorganized the kingdom. He turned the five powerful clans into five provinces. He appointed a governor to rule each province. These governors came from the clans themselves. However, they were under the direct control of the king. This system allowed Taejo to control the military and the economy. He also controlled politics through this central bureaucracy. He traveled throughout his territories to maintain this royal control.

Taejo was a leader who expanded his borders through many conquests. In AD 56, he conquered Eastern Okjeo. He conquered Galsa in AD 68. He also took Jona in AD 72 and Juna in AD 74. He frequently fought with the Han dynasty in China. In AD 55, he ordered a fortress to be built in the Liaodong Commandery. He launched attacks on Chinese border regions in AD 105, 111, and 118.

In AD 122, Taejo used diplomacy and alliances to grow the realm. He allied with the Mahan confederacy from central Korea. He also worked with the neighboring Yemaek tribe. Together, they attacked Liaodong. This helped expand the territory of Goguryeo even further. He launched one more major attack in AD 146. His many actions helped turn a small state into a large empire.

Historians debate how long Taejo actually lived and ruled. Some records, like the Samguk sagi, say he ruled for 93 years. If this is true, he had one of the longest reigns in world history. These records say he died at age 118. However, the Chinese Book of Later Han provides different numbers. That book says he died in AD 121. This would mean he ruled for 68 years. It also means he died at age 74. Both versions show he was a very long-reigning monarch.

There is also mystery regarding the family names of the kings. The founder of Goguryeo, Jumong, used the surname Go. His son Yuri used the surname Hae instead. For a time, several rulers used the Hae name. Later, a boy with the surname Go took the throne. This happened after he deposed the last Hae ruler. Some scholars believe this shows different families ruled at different times. They think the Go family of the Gyeru-clan regained power under Taejo.

Finally, scholars look at Taejo's specific title. He was given the posthumous title of Taejo. This name means "Grand Ancestor." This is unusual because he was the sixth ruler, not the first. Many scholars find this fact very significant. They suggest it proves that different families held power in early Goguryeo. The title might have been a way to honor him as a founder of a new era. These historical debates continue to help us understand how Goguryeo was built.