According to ancient Oguz traditions, the government has a binary organization or structure. This organization or structure mostly appears in the form of right-left and east-west; hawever, it can alsa be described as inner-outer and white-black. Depending on this tradition, the Oguz tribe was divided into the two branches called Boz-ok and Üç-ok, each of which had twelve tribes. The Ottoman belongs to the Kayı tribe among these twenty-four tribes. According to our research, the Karakeçili tribe, which Ertuğrul Gazi is considered to be a member of, show themselves as the founder of the empire together with the Kayı tribe.This research aims to mention Turkishness, Turkish migrations, a brief history of Karakeçili tribe, Karakeçili wedding traditions, rivals and finally beliesfs of Karakeçili tribe.

Keywords: Turk, Oguz, Boz-ok, Üç-ok, Kayı, Yörük, Karakeçili, Softalı, Ertuğrul Gazi