《新五代史·世家·南平世家第九》
长兴元年正月，封高从诲焉节度使，追封高季兴为楚王，赐谧号武信。
长兴元年正月，拜从诲节度使，追封季兴楚王，谥曰武信。
In the first month of Changxing, the first year of the reign of Emperor Mingzong of Tang, Gao Conghai was enfeoffed as the Acting Jiedushi of Yan. Gao Jixing was posthumously enfeoffed as the King of Chu and granted the posthumous title of Wuxin.