《宋史·列传·卷二》
咸淳十年，度宗死后，瀛国公立为皇帝，册封皇后为皇太后。
十年，度宗崩，瀛国公立，册为皇太后。
In the 10th year of Xianchun, after Emperor Duzong died, the Duke of Ying ascended the throne and enfeoffed the Empress as the Grand Empress Dowager.