This research studied and analyzed about Patronage system and sport genius in the new age of Royal Thai family members (from 1910 to 2016). It presents ideas of the new form of the society, when sports be a union of internationality of human society. Sport genius of the Royal Thai family members can establish a righteousness to some of them. In this research also focus on any background about sports affiliation of the Royal Thai family. Actually, those point of view can show that sports are the main idea to establish righteousness for the Royal Thai family as well. In this work the researcher has analyzed by using historical methods, information, documents and other relevant evidences. The study indicated that the members of the Royal Thai family, in the case of this research, had causes in different factors to affiliate sports as being a supporter or sportsman. However, the study proved that "Sports genius" can be the good main point of Establishment of a New Form of Righteousness of Royal Thai family members.
