According to "Kojiki" (The Records of Ancient Matters) and "Nihonshoki" (Chronicles of Japan), the Soga clan descended from TAKESHIUCHI no Sukune who achieved great success in the Sankan Seibatsu (Punitive Expeditions Against the Three Korean Kingdoms) led by Empress Jingu.
『古事記』や『日本書紀』では神功皇后の三韓征伐などで活躍した武内宿禰（たけしうちのすくね）を祖としている。