The Yang clan of Hongnong (弘農楊氏) was a prominent Chinese clan known for producing many high-ranking officials and imperial concubines.
Their ancestral home was Hongnong Commadery (農楊郡).
The first notable member of this clan was Yang Chang (楊敞), who served as prime minister during the Western Han dynasty.
[1][2] The Hongnong Yang clan tomb in Shaoguan County, Shaanxi Province, has been used for several generations since Yang Zhen.
[3] According to the Book of Sui, Yang Jian the founding emperor of the Sui dynasty, was born to the Yang clan of Hongnong, and was a descendant of Yang Zhen.