Tae Wihae

Tae Wihae was the 14th king of the 7th-10th century Balhae kingdom, which encompassed modern day Korea and some southern parts of northeast China.
Little is known of Tae Wihae, and some lists of Balhae monarchs do not include him, though his name does appear in the Chinese chronicle Tang Huiyao. His temple name and era name are unknown.
It was not until 1940 that Tae Wihae's existence was confirmed, when Jin Yufu and other Chinese historians verified his name for the first time.
Though few records exist, it is thought that Tae Wihae made progress in diplomatic fields, having sent delegates, Baejeong to Japan, and osodo to Tang dynasty China, in 894 and 905 respectively. He had a son named Tae Pongye.