The Go (Jeju) clan is the family name of the Lord (Korean: 성주; Hanja: 星主; RR: Seongju), that ruled West Tamna over 400 years.

The Moon (Nampyeong) clan is the family name of the Prince (왕자; 王子; Wangja), that ruled East Tamna for 400 years.

One legend tells that the three divine founders of the country—Go (고), Yang (양), and Bu (부)—emerged from three holes in the ground in the 24th century BC.

Yang Eul-na searched in the box and found three women, horses, cows, and agricultural seeds such as rice, corn, grain, millet, barley, and bamboo.

[7][8] Archaeological evidence indicates that the people of Tamna were engaging in active trade with Han China and Yayoi Japan, South-east-Asian nations, with the Tamil Chola dynasty, as well as rest of Korea, by the 1st century AD.

Silla then conferred on the three princes of Tamna the titles which they would hold for the remainder of the kingdom's history: Seongju (성주, 星主), Wangja (왕자, 王子), and Donae (도내, 都內).

West Tamna ruled by Go(Jeju) Clan for 400 years Governor of Left Jeju (좌도지관/左都知管) (좌도지관/左都知管) (좌도지관/左都知管) (좌도지관/左都知管) *Based on Tamnaji(탐라지, 耽羅志), Goryeosa(고려사, 高麗史) and The Veritable Records of Joseon Dynasty (조선왕조실록, 朝鮮王朝實錄) The Moon(Nampyeong) clan is the family name of the Prince(Wangja, 왕자, 王子), that ruled East Tamna.

(문착) (문양부) (문영희) (문신) (문창우) (문창유) (문공제) (문승서) (문신보) (문충보) (문충걸) (문충세) Governor of Right Jeju (우도지관/右都知管) 1404–1415 (우도지관/右都知管) *Based on Tamnaji(탐라지, 耽羅志), Goryeosa(고려사, 高麗史) and The Veritable Records of Joseon Dynasty (조선왕조실록, 朝鮮王朝實錄) The Tamna language might have been Japonic in origin, later being replaced by a Koreanic language.