佛祖歷代通載 18.41

18.41

（戊戌）　真宗恒（太宗第三子。初名德昌。又改元侃。以軒轅為聖祖。目曰昊天玉皇上帝。追封孔子曰至聖文宣王。壽五十五崩于延慶殿）改年咸平。

(Wuxu [998 CE]) Zhenzong, named Heng (the third son of Taizong; initially named Dechang, then changed to Yuankan; he took Xuan Yuan as the Sage Ancestor, designated him the Jade Emperor of Vast Heaven, and posthumously enfeoffed Confucius as Supreme Sage King of Propagating Culture; at the age of fifty-five he collapsed in the Yanqing Palace), changed the reign year to Xianping.