1. It comes from the surname Si and is named after the country. During the Xia Dynasty, there was the vassal state of Gan (southwest of present-day Luoyang City, Henan Province). After the fall of the country, its monarch's family dispersed in various places. They took the original name of the state and became a branch of the Gan surname.
2. It comes from the surname Zi, taking the surname of Zu as the surname. According to "Surname Compilation" and "Surname Genealogy": "Gan, Wu Dingchen came after Ganpan." During the Shang Dynasty, Gaozong Wuding studied under Ganpan, and later Wuding became the king of Shang, so he used Ganpan as his prime minister. The descendants of Gan Pan took their ancestor's name as their surname, and thus became the surname Gan.
3. It comes from the surname Ji and is named after the place. According to the "Manuscript of the Words and Deeds of Mingxian Clan": "King Wu of Zhou has the same surname, and he is a prince in Ji Nei. Because of his surname Yan, Gan Bohenggong is also the same, and Qin has Ganmao and Ganluo." That is to say, during the reign of King Wu of Zhou Dynasty, people of the same clan were granted the title of princes and kings in Ji Nei. Among them, the one who was granted the title of Gan Bo was called Gan Bo.
Later there was Gan Bohenggong, and his descendants also had the surname Gan. The origin of this branch of the Gan family was within the royal territory of Emperor Zhou. The so-called Wangji at that time refers to the surrounding areas now centered on Chang'an, Shaanxi.
According to research, the southwest of Huxian County in Shaanxi Province was named after Gan at that time. Therefore, the Huxian area in Shaanxi Province has always been considered the birthplace of the Gan family, and it is related to everyone with the surname Gan. , are extremely profound.
4. It comes from the son of Zhaogong of Gan State in the Spring and Autumn Period, and his descendants took Gan as their surname.
Extended information
The "Hundred Family Surnames" of the early Northern Song Dynasty ranked the surname Gan at 245th. Since the Song Dynasty, the Gan family has spread more widely. There are Gan settlements in Guangdong in the south and Liaoning in the northeast. In the Song Dynasty, there were poet Gan Yong, who was from Chongren (now part of Jiangxi Province); and general Gan Zhaoji of Zuolongwu Army, who was from Kaifeng (now part of Henan Province). In the Yuan Dynasty, there was a poet named Gan Fu, who was from Yuqian (now Jiangxi).
In the Ming Dynasty, there was a great scholar named Gan Wanglu, who was a native of Macheng (now part of Hubei). )people. At the end of the Ming Dynasty and the beginning of the Qing Dynasty, Gan Hui, a general of Zheng Chenggong's army in the Southern Ming Dynasty, was born in Longhai, Fujian. He was born in a peasant family. He and Lin Si gathered a crowd to revolt. Later, he returned to Zheng Chenggong, served as the admiral, and was granted the title Chongming Bo. He was famous for his bravery and good warfare.
There was Gan Wenkun in the Qing Dynasty. He was originally from Fengcheng, and later moved to Liaodong (today's Liaoyang, Liaoning). He was subordinate to the Zhenglan Banner of the Han Army and served as the governor of Yunnan and Guizhou. His son Gan Guobi served as governor of Yunnan, and his great-grandson Gan Yuan He served as governor of Guangdong and was a calligrapher.
Gan Rulai, a native of Fengxin (now part of Jiangxi), served as Prince Shaobao, Minister of the Ministry of Personnel and Minister of the Ministry of War, and was a famous minister during the Kangxi period. There is also the bibliophile Gan Fu, who was born in Jiangning (now part of Jiangsu). His family had Jindalou and he accumulated more than 100,000 volumes of books.
Baidu Encyclopedia-Gan surname