《北齐书·列传·卷三十三》
内史都让称太后为石婆，大概有世俗的忌讳，所以改名来驱避病灾。
内史皆令呼太后为石婆，盖有俗忌，故改名以厌制之。
The Minister of Internal History all addressed the Empress Dowager as Shi Po, probably because of worldly taboos, so they changed her name to ward off illness.