《新唐书·本纪·卷六·肃宗 代宗》
开元十五年，更名为李浚，改封为忠王，任朔方节度大使、单于大都护。
十五年，更名浚，徙封忠王，为朔方节度大使、单于大都护。
In the fifteenth year of the Kaiyuan era, his name was changed to Li Jun and he was made King of Zhong. He was appointed as the Minister of the Northern Frontier and the Grand Protector of the Xiongnu.