From articles on genealogy written in "the Kojiki and Nihonshoki (Chronicles of Japan)," there is a theory which claims that it is reasonable to think that Ojin was made up by combining influential persons of the time in the royal line.
『記・紀』に記された系譜記事からすると、応神は当時の王統の有力者を合成して作られたものと考えるのが妥当であるとする説がある。