《旧唐书·本纪·卷十三》
十三日，以蕲州刺史郑绅为鄂州刺史、鄂、岳、蕲、沔观察使。
己巳，以蕲州刺史郑绅为鄂州刺史、鄂岳蕲沔观察使。
On the 13th, Zheng Shen, the Prefect of Qizhou, was appointed as the Prefect of Ezhou and the Observation Envoy of E, Yue, Qi, and Mian.