《资治通鉴·唐纪·唐纪四十四》
丁卯，德宗改封郴王李逾为丹王，王李为简王。
丁卯，徙郴王逾为丹王，鄜王遘为简王。
On the ding-mao day, Dezong changed the title of Li Yu, Prince of Chen, to Prince of Dan, and the title of Li Yi, Prince of Wang, to Prince of Jian.