Yang Liang
His father was the Sui Dynasty general Zhangsun Sheng (), and his mother was Zhangsun Sheng's wife Lady Gao, the daughter of the official Gao Jingde (高敬德). He had at least three older brothers—Zhangsun Sheng's oldest son Zhangsun Xingbu (長孫行布, who was killed in 604 while resisting the rebellion of Emperor Yang of Sui's brother Yang Liang the Prince of Han), Zhangsun Heng'an (長孫恆安), and Zhangsun Anye (長孫安業). (Empress Zhangsun was also born of Lady Gao, while Zhangsun Anye was not; who Zhangsun Xingbu's and Zhangsun Heng'an's mothers were was not recorded in history.) Zhangsun Sheng died in 609, and Zhangsun Anye, instead of raising his younger brother and sister, expelled them, as well as his stepmother Lady Gao, from the Zhangsun household and sent them back to Lady Gao's brother Gao Shilian, and Gao Shilian raised them.