Life

Gongsun Kang was a son of Gongsun Du, the Administrator of Liaodong appointed by the Han central government. In 204, he inherited his father's appointment and controlled the territories of Liaodong, Xuantu and Lelang commanderies. He was nominally subject to the Han chancellor Cao Cao, while keeping his domain semi-independent of the central government. In 207, when Yuan Shang and Yuan Xi fled to Liaodong after being defeated by Cao Cao's forces, Gongsun Kang killed the Yuans and sent their heads to Cao Cao.

Gongsun also defeated Yiyimo, the king of Goguryeo, at his capital and forced him to move the capital. He separated the southern half of Lelang Commandery and established Daifang Commandery in 204 to make administration more efficient. He also attacked the southern natives and forced them to submit to Han rule.

When Gongsun Kang died, his younger brother Gongsun Gong succeeded him because his sons were still young at the time. Gongsun Kang's son Gongsun Yuan took back control of Liaodong in 228.

事跡

早年被時任襄平縣令的公孫昭命為伍長，為公孫度的霸業留下了契機。建安九年（204年）其父公孫度去世，公孫康繼承了他的職位。以東漢朝廷所封的永寧鄉侯封其弟公孫恭。

207年，袁熙、袁尚聯合蹋頓單于進攻白狼山，被曹操手下大將張遼擊敗，蹋頓單于被斬首。袁熙、袁尚和數千騎兵逃往遼東，公孫康恐袁熙、袁尚鳩占鵲巢，又見曹操無進軍之意，於是將二人斬殺，首級送給曹操。209年，公孫康攻陷高句麗都城。公孫康死後，二子尚幼，遼東太守一職由公孫康之弟公孫恭接任。

家庭

祖先

• 公孫延，公孫康祖父，與公孫度一起移居至玄菟。

• 公孫度，公孫康之父，遼東太守，不斷開闢疆土，為後人打下基礎。

兄弟

• 公孫恭，公孫康之弟。於公孫康死後，繼承了其兄遼東太守的職位。後大病成為閹人，被長大的公孫淵脅逼退位。

兒子

• 公孫晃，公孫康嫡長子。因曹魏任子制在洛陽為官，公孫淵叛亂失敗後被處死。

• 公孫淵，公孫康庶出次子。因反魏，而被司馬懿擊殺。

女兒

• 公孫氏，被百濟王仇首迎娶為妃。

遼東公孫氏世系圖

部下

• 公孫模、張敞，治理帶方郡。

• 韓忠，公孫康遣使韓忠假峭王單于印綬。

動漫

• 《火鳳燎原》（陳某）：並無登場，但於劇情交代受郭嘉計謀下殺害袁熙、袁尚。

評價

• 郭昕、柳浦：「康踐統洪緒，克壯徽猷，文昭武烈，邁德種仁；乃心京輦，翼翼虔恭，佐國平亂，效績紛紜，功隆事大，勛藏王府。度、康當值武皇帝休明之會，合策名之計，夾輔漢室，降身委質，卑己事魏。匪處小厭大，畏而服焉，乃慕讬高風，懷仰盛懿也。」（《三國志·卷八·魏書八·二公孫陶四張傳第八》裴松之注引《魏書》）

• 鐘伯敬：「袁氏兄弟亦有詭計，畢竟死于公孫氏手，以公孫氏計更詭也。」（《匯評三國志演義》）

• 陶元珍：「公孫氏滅後不數年有毌丘儉討高句驪之役，功烈足稱，其攻破高句驪國都，可與公孫康後先輝映。」（《遼東公孫氏事跡雜考》）