The Jeong-ahn Kingdom was a successor state of Balhae

Balhae

Balhae was a Manchurian kingdom established after the fall of Goguryeo. After Goguryeo's capital and southern territories fell to Unified Silla, Dae Jo-yeong, a Mohe general, whose father was Dae Jung-sang, established Jin , later called Balhae.Balhae occupied southern parts of Manchuria and...

 founded by Yeol Manhwa. The official Chinese historical record, History of Song states that Jeong-an Kingdom derives from Mahan

Mahan confederacy

Mahan was a loose confederacy of statelets that existed from around the 1st century BCE to 3rd century CE in the southern Korean peninsula in the Chungcheong and Jeolla provinces. Arising out of the confluence of Gojoseon migration and the Jin state federation, Mahan was one of the Samhan , along...

.

Establishment and Downfall

When Khitan

Khitan people

thumb|250px|Khitans [[Eagle hunting|using eagles to hunt]], painted during the Chinese [[Song Dynasty]].The Khitan people , or Khitai, Kitan, or Kidan, were a nomadic Mongolic people, originally located at Mongolia and Manchuria from the 4th century...

 Liao Dynasty

Liao Dynasty

The Liao Dynasty , also known as the Khitan Empire was an empire in East Asia that ruled over the regions of Manchuria, Mongolia, and parts of northern China proper between 9071125...

 forces deposed Balhae

Balhae

Balhae was a Manchurian kingdom established after the fall of Goguryeo. After Goguryeo's capital and southern territories fell to Unified Silla, Dae Jo-yeong, a Mohe general, whose father was Dae Jung-sang, established Jin , later called Balhae.Balhae occupied southern parts of Manchuria and...

 in 926

926

Year 926 was a common year starting on Sunday of the Julian calendar.- Asia :* Balhae is conquered by the Khitan....

, a few officials of the fallen kingdom, led by the Dae clan, established Later Balhae

Later Balhae

Later Balhae was established in 927, by the Dae Royal family. It was the first of the immediate successor states to Balhae after its fall to the Khitan in 926...

. However, in 935

935

Year 935 was a common year starting on Thursday of the Julian calendar.-Africa:* A third attempt to conquer Egypt by the Tunisia-based Shi'ite Fatimid dynasty fails....

, General Yeol Manhwa took control of the government after the death of the Dae clan king, and changed the state name to Jeong-an. The Jeong-an Kingdom is recorded to have enlisted the assistance of neighboring tribes with the hopes of overthrowing the Khitan

Liao Dynasty

The Liao Dynasty , also known as the Khitan Empire was an empire in East Asia that ruled over the regions of Manchuria, Mongolia, and parts of northern China proper between 9071125...

, but apparently failed to do so. The Yeol clan was replaced by the Oh clan in 976, and was ruled by Oh Hyeon-myeong until before it was finally destroyed by the Khitan in 986 CE.

Rulers

1. Yeol Manhwa (열만화, 烈萬華, 935
   935
   Year 935 was a common year starting on Thursday of the Julian calendar.-Africa:* A third attempt to conquer Egypt by the Tunisia-based Shi'ite Fatimid dynasty fails....
   
   ? - 954
   954
   Year 954 was a common year starting on Sunday of the Julian calendar.- Europe :* King Máel Coluim I of Scotland is killed in battle against the Highlanders...
   
   ? or 960
   960
   Year 960 was a leap year starting on Sunday of the Julian calendar.- Europe :* Edgar the Peaceable is crowned King of England. Dunstan becomes Archbishop of Canterbury and Edgar's chief adviser. He reforms monasteries and enforces the rule of Saint Benedict: Poverty, Chastity and Obedience for...
   
   ?)
2. Oh Hyeon-myeong (오현명, 烏玄明, 976
   976
   Year 976 was a leap year starting on Saturday of the Julian calendar.- Byzantine Empire :* January 10 – Basil II becomes Eastern Roman Emperor .- Europe :...
   
    - 985
   985
   Year 985 was a common year starting on Thursday of the Julian calendar.- Europe :* Barcelona is sacked by Al-Mansur....
   
   )