There are basically three origins of Yan surname: from Cao surname (this branch is mainly based on Yi Cao's father and his descendant Yan Hui); From the surname Ji (this branch is mainly based on, Boqin); His family changed its surname. The main names of Yan are Yan Hui, Yan Yanzhi, Yan Zhitui, Yan Zhenqing, Yan Yuan and others.
Extended data
Yan name:
1, Yan Zhaofu: the great-grandson of Yan Zhitui. Tang officials, scholars, Li Guan assistant minister, Huazhou secretariat. Gong Zhuan, Shu and Cao Lishu are as famous as my brother-in-law, Yin Zhongrong, and I was praised by my uncle for learning from the ancients.
2. Yan Zhenqing: the grandson of Yan Zhaofu. Tang dynasty ministers and calligraphers. During the Kaiyuan period, he was a scholar, and he was tired of supervising the empire. Yang was demoted as the Taishou of Weishui for disobeying the orders of the Taishou. He expected that An Lushan would rebel, so he was prepared. In the 14th year of Tianbao (755), An Lushan rebelled. He and his brother Guo Qing * * * rose to respond to the nearby county 17. After the chaos, he entered Beijing as an official and was repeatedly slandered.
Baidu Encyclopedia-Yan surname