Seosan Jeong clan
The Seosan Jeong clan is a Korean clans. Their Bon-gwan was in Seosan, South Chungcheong Province. According to the research held in 2000, the number of Seosan Jeong clan was 15362. Their founder was living in Pujiang County, Zhejiang who was a government officer in Song dynasty. used to be a Yuanwailang. Then, he settled in Seosan of Goryeo after Song dynasty declined.
