The first type: The Four Monsters originated in Shennong period, about 6500 years ago.
According to Yuan Ming Pao, the ancient priests blamed the Lord. The Four Monsters is a priest who is good at divining fate, explaining the present and predicting the future. His descendants took Zeus as their surname and called him. Textual research on surnames also believes that this is the origin of the Si family.
The second type: from the Spring and Autumn Period, the minister of Zheng people, whose family is Si, is about 2500 years ago.
According to the historical book Zuo Zhuan, there was a minister in the state of Zheng in the Spring and Autumn Period. (See Zuo Zhuan Xiang Gong Ten Years and Zuo Zhuan Xiang Gong Fifteen Years); According to "A Brief History of Clans", after the minister, it is the minister.
The third type: from the surname of the son, from the official position of the Zhou Dynasty, with the official as the surname, about 2700 years ago.
According to Xia Yishi's genealogy, Wu Cheng, the tenth descendant of Yin, was born in the early Eastern Zhou Dynasty and the western weekend. He was an ordinary person in Luoyi, the capital of Zhou Dynasty, and later got his surname.
The fourth type: from the perspective of changing the surname, starting from the Jin Dynasty, the surname was changed to Sima.
Sima is the surname of Jin Dynasty. Legend has it that after the demise of the Jin Dynasty, some royal families changed Sima's family to Si's family for self-protection, and their descendants were distributed in southern Shandong and other places today. In some areas, the Ministry hall is called "the Eastern Jin Hall", which is said to be related to this.
Division surname migration distribution:
Si is an ancient surname with many nationalities and origins, ranking185th in the current surname list, with a population of about 590,000, accounting for 0.036% of the total population of China. Nowadays, Si clan people are widely distributed in China, especially in Shandong, Anhui, Henan, Shaanxi and other provinces.