Yang Qianlong

Yang Xianrong (羊獻容) (died 13 May 322), posthumous name (as honored by Former Zhao) Empress Xianwen (獻文皇后, literally "the wise and civil empress"), was an empress—uniquely in the history of China, for two different dynastic empires and two different emperors. Her first husband was Emperor Hui of Jin, and her second husband was Liu Yao of Former Zhao. Also unique was that she was deposed four times and restored four times as empress of the Western Jin.

Biography fallback source: Wikipedia