1. It comes from taking the mountain name and the official name as the surname. During the Zhou Dynasty, there was an official named Lord Dongmeng, whose duty was to manage and preside over the worship of Mengshan. The descendants of this official also lived in Mengshan from generation to generation, and took the name of the mountain as the surname, forming the surname of Mengshan.
2. It comes from Levin's family and takes the place name as the surname. After the establishment of the Xia Dynasty, Zhuan Xu's descendants were sealed in Mengshuang (it is said to be Shuangmeng), so his descendants took the name of the fief as their surnames and became Mengxing and Shuangxing.
3. It was changed by his surname:
① A Mongolian surname was changed from Dongmeng.
(2) In the Yuan Dynasty, there was a Mongolian surname with multiple surnames, and later their descendants gradually took the single surname "Meng" as their surname.
③ Nanzhao was named Meng, and lived in Mengshe Prefecture. Later, it entered the Central Plains and settled in Anding (now Dingxi, Gansu Province).
ancestor of Meng surname: Meng Shuang. China, a Mongolian surname, is a direct descendant of the Yellow Emperor, and many ancient surnames are recorded in detail. According to the Biography of Lushi Shu, Meng's surname is the descendant of Emperor Levin, and Levin's family has a history of about 4,5 years. He is the grandson of Xuanyuan's family of Huangdi, and there was a general Meng Ao in Qin Dynasty. According to Textual Research on Surnames, Levin's descendants were given double titles, including Montessori and Shuangshi. Montessori is a famous family in the pre-Qin period. The noble family lives in Anding County, which is now Guyuan County, Gansu Province. Meng's descendants regarded Meng Shuang as the ancestor of Meng's surname