Origins
Descent from Cheng En of the Gui Clan
One lineage traces to Cheng En, an official of the State of Chen in the Spring and Autumn period and a member of Chen's Gui-surnamed ruling clan. His descendants adopted En, his personal name, as their surname; related accounts appear in Fengsu Tong, Wanxing Tongpu, and Lushi.
Origin from the Tang Prefecture of Enzhou
One lineage originated from Enzhou in Lingnan during the Tang dynasty and took the place of residence as its surname. Some local tusi leaders and Pacification Commission officials among Dai, Dong, Miao, Yao, and other groups adopted the place name as the Chinese surname En.
Other Lineage Traditions
Other traditions connect the surname with descendants of Shun, descendants of Laozi, or En Cheng, a descendant of Boyi of the Ying clan. These accounts are recorded in Lushi and Zhang Shu's Xingshi Wushu Zhu.
