King Zhaoxiang of Qin
Because King Zhaoxiang had not yet legally come of age (traditionally at the age of 20), his mother, who was now known as Queen Dowager Xuan, became the regent. She was supported by her brothers, Wei Ran and Mi Rong (羋戎), as well as two other sons, Prince Yi (公子悝) and Prince Fu (公子巿), the four of them collectively known as the "Four Nobles" (四貴).
Empress Dowager Xiao (Tang dynasty)
Empress Dowager Xiao (蕭太后) (died June 1, 847), formally Empress Zhenxian (貞獻皇后, "the virtuous and wise empress"), known at times in her life as Empress Dowager Jiqing (積慶太后), was an empress dowager of the Chinese Tang Dynasty. She was the mother of Emperor Wenzong and a concubine of Emperor Muzong.