Sō clan
Tsushima Province was controlled by officials called Tsushima no kuni no miyatsuko () until the Nara period, and then by the Abiru clan until the middle of the 13th century. The role and title of "Governor of Tsushima" was exclusively held by the Shōni clan for generations. However, since the Shōni actually resided in Kyūshū, it was the Sō clan, known subjects of the Shōni, who actually exerted control over these islands. The Sō clan governed Tsushima until the late 15th century.