三国史記 (History of the Three Kingdoms — Oldest surviving Korean history, 1145)

Sindeok King Named Gyeonghui, of the Park clan, son of Achan Yegyeom. He was the son-in-law of King Gyeonggang. When King Hyogong died without an heir, the people of the country supported him and he ascended the throne. He reigned for five years.
Gyeongmyeong King Eldest son of King Sindeok. Mother: Queen Jaseong. Ascended the throne in the 7th month of the Ding-chou year. Reigned for eight years.
Gyeongae King Younger brother of King Gyeongmyeong. Mother: same as above. Ascended the throne in the 7th month of the Jia-shen year. Reigned for four years.
Gyeongsun King Given name Bu, great-grandson of King Munseong, son of Ichan Hyoryeom. Mother: Lady Gae-a, daughter of King Heongang. After King Gyeongae died at Poseok Pavilion on Namsan, the people of the country supported him and he ascended the throne. Reigned for nine years. In the 10th month of the Ding-you year (935 CE), he submitted to Goryeo.

History of the Three Kingdoms, Volume 13

Annals of Goguryeo, Volume 1
Founder Dongmyeongseong King
Yuri King

History of the Three Kingdoms, Volume 14

Annals of Goguryeo, Volume 2

Annals of Silla, Volume 11

Three Volumes
Munseong King
Heonan King
Gyeongmun King
Heongang King
Jeonggang King
Jinseong Queen Named Man, daughter of King Gyeongmun, younger sister of King Heongang. Ascended the throne in the 7th month of the Bing-wu year (886 CE). Reigned for 11 years. Changed the era name to Bukbu-jachi.

History of the Three Kingdoms, Volume 12

Annals of Silla, Volume 12
Hyogong King Named Yo, son of King Heongang. Mother: Lady Uimyeong. Ascended the throne in the Ding-si year (897 CE). Reigned for 15 years.