Gongsun Kang
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.