Jingkang Incident
The origin of Irgen Gioro does not have a decisive conclusion. According to a famous anecdote, the ancestors of Irgen Gioro were the emperors Huizong, Qinzong, and other imperial family members of Song dynasty who were captured by the Jurchens in the Jingkang Incident of the Jin–Song wars. The Manchu emperors had also bestowed their family name to the founding ministers or generals who rendered outstanding service to the empire. In order to differentiate from Aisin Gioro the Manchu imperial family, "Irgen" was added with the meaning of "regular citizen" or "common people" and the implication of "non-imperial".