《后汉书·列传·任李万邳刘耿列传》
王郎兴起，郡国都投降了王郎，任光独不肯，就与都尉李忠、令万修、功曹阮况、五官掾郭唐等同心固守。
及王郎起，郡国皆降之，光独不肯，遂与都尉李忠、令万脩、功曹阮况、五官掾郭唐等同心固守。
When King Lang rose up, the prefectures and counties all surrendered to King Lang, but Ren Guang alone refused, and together with Du Wei Li Zhong, Ling Wan Xiu, Gong Cao Ruan Kuang, Wuguan Yuan Guo Tang, and others, they defended the city with one heart.