Sō Morikuni

Sō Morikuni was the fourth head of the Sō clan, the warrior family that ruled Tsushima Island, succeeding his father Moriaki. He received a character for his name from the Shōni of northern Kyushu, his suzerains.

After the Muromachi shogunate was founded in 1336, he acknowledged its authority and governed Tsushima as the Shōni's deputy through the Northern and Southern Courts wars. His son Tsuneshige succeeded him as head of the clan.