Wikipedia
Yemaek
Yemaek or Yamaek were an ancient tribal group regarded by many Korean scholars as being the Tungusic ancestors of the modern Korean ethnic group. These people most commonly dwelt in Manchuria and the Korean Peninsula. They had ancestral ties to various Korean kingdoms including Gojoseon, Buyeo, Goguryeo, Baekje, and tribes including Okjeo, Dongye, and Yangmaek and Sosumaek .