Chumo, posthumously Chumo the Saint, was the founding monarch of the kingdom of Goguryeo, and was worshipped as a god-king by the people of Goguryeo and Goryeo. Chumo was originally a Buyeo slang for an excellent archer, which became his name later. He was commonly recorded as Jumong by various Chinese literatures including history books written by Northern Qi and Tang—the name became dominant in future writings including Samguk Sagi and Samguk Yusa. Chumo's title was changed to Dongmyeong the Saint, literally translated to the Brilliant Saintly King of the East, at some point of time prior to compilation of Samguk Sagi (1145). His other names include Chumong, Jungmo, Nakamu, or Tomo. In Samguk Sagi, he was recorded as Jumong with the surname Go, and was also known as Junghae or Sanghae.

Goguryeo also later known as Goryeo, was a Korean kingdom which was located in the northern and central parts of the Korean Peninsula and the southern and central parts of modern day Northeast China. At its peak of power, Goguryeo conquered most of the Korean Peninsula and large parts of Manchuria, along with parts of eastern Mongolia, Inner Mongolia, and modern-day Russia.