Every Korean has blood-based family name and surname origin, which is based on region and presenting family origin. However, in modern Korea, where the caste system has demolished, the strong tendency to understand the surname origin as in relationship with particular class is still remained. For example, the tendency of recognizing certain surname origin as the surname origin of the yangban class, and another particular surname origin as non-yangban class is still present. If so, were same surname origins meant the one unified class? Moreover, could identical surname origin in particular region seen as all are in blood relationship? This study is to revise the problem of the classification that Korean surname origin has. Furthermore, the study ponders the problem that all surname origins of particular regions have formed one unified blood relationship or a tribe. For the explanation of this problem, the study has focused on the classification of surname origin in late Joseon Dynasty, when the prototype of the surname origin system of modern Korean has formed. This study has compared and analyzed Seosang-myeon and Daegu-bu, where were the representative cities in late Joseon Dynasty and Danseong-hyeon, the typical rural region. As a result, the study could figure the fact that the identical surname origin of a particular region does not have one unified class and blood relationship. Different classes were present within the same surname origins, and surname origins, which could clearly find the blood relationship and has blood relationship that is relevantly difficult to find, were present. This tendency was strongly appeared in urban regions than rural regions. If people in a region with identical surname origin did not have one unified class and blood relationship, this could infer the conclusion that the surname origin of Joseon Dynasty does not mean the definite tribe.