《旧唐书·本纪·卷十三》
十九日，以湖南观察裴胄为洪州刺史、江西观察使，以常州刺史李衡为潭州刺史、湖南观察使。
庚辰，以湖南观察使裴胄为洪州刺史、江西观察使，以常州刺史李衡为御史中丞。
On the 19th day, Pei Zhou, the govern of Hulaon, was appointed magistrate of Hongzhou and Hujiang observe of Jiangxi; Li Heng, the magistrate of Changzhou, was appointed magistrate of Tanzzhou and Hujiang observe of Hunan.