釋氏稽古略 4.250

4.250

遼天祚立。諱延禧。道宗之孫。秦主元吉之子。自稱天祚皇帝。淫縱失道。卒至於亡國（遼志）。

Liao: Tianzuo ascended the throne. His taboo name was Yanxi. He was the grandson of Daozong and the son of Prince of Qin, Yuangi. He styled himself Emperor Tianzuo. He was licentious, unbridled, and lost the Way, eventually leading to the ruin of the state (Liao Annals).