This study examines an overview of the epitaph of Liu Riyong, accompanied by a detailed translation and annotation, while also examining its historical significance. In the early period of the Liao Dynasty rule over the Sixteen Prefectures (燕雲十六州), governance largely followed the traditional model of regional Military Commissioners (Jiedushi, 節度使) from the previous period. Therefore, the activities and status of these Military Commissioners cannot be overlooked in understanding the governance structure and society of Liao. Since the 1990s, active publication of compilations of Liao Dynasty inscriptions has enabled scholars to trace how the descendants of the Five Dynasties’ Military Commissioners lived under Liao rule. Liu Riyong was the great-great grandson of Liu Rengong (劉仁恭), a Military Commissioner from the Five Dynasties period, and served as an official during the reigns of Emperor Shengzong (聖宗) and Emperor Xinzong (興宗). Through this epitaph, it is demonstrated that the Liu clan of Liucheng (柳城 劉氏), originated from a Five Dynasties’ Military Commissioner background, held official positions and prospered during the Liao Dynasty. Futhermore, this epitaph provides valuable insights into the rebellion of Dae Yeonrim (大延琳), a Balhae descendant, offering a new perspective on rebellion’s development and the Liao’s governance over the insurgent population This study underscores the historical value of the epitaph and aims to contribute to a deeper understanding of the descendants of the Five Dynasties' Military Commisioners, who later became part of the Han Chinese community under Liao rule.