Lady Dugu (Chinese: 獨孤氏, personal name unknown, fl.544[1] - 590s) was a duchess of the Northern Zhou dynasty.
[2] She was given the posthumous name Empress Yuanzhen (元貞皇后) during the Tang dynasty, after her son Li Yuan ascended the throne.
According to official history, Dowager Dugu was once extremely sick and due to her reckless personality, several of her daughters-in-law refused to assist her (probably because their husbands were not her biological sons).
Only Duchess Dou cared for her, and Dowager Dugu recovered after a month.
[5] According to Alphonse Mingana and Edward Harper Parker, Dugu might have been a "Nestorian" Christian.