According to "Kojiki" (the Records of Ancient Matters) and "Nihonshoki" (Chronicle of Japan), the Inugami clan was the descendants of Inayoriwake no Miko who was a son of Yamato Takeru no Mikoto; they were a powerful family that had the base in Inugami-no-kori County of Omi Province where many immigrants from China and Korea had settled; the members of the Inugami clan were often involved in the diplomacy related to such foreign countries, so some historian says that they were one of the clans originated from a immigrant such as Amenohiboko.
犬上氏は日本武尊（やまとたけるのみこと）の子稲依別王の後裔と記紀に記載される近江国犬上郡を拠点とする豪族で、附近に渡来人集団が多く、犬上氏自身も天日槍等の渡来人の系譜であるとの見解もあるほど中国大陸や朝鮮半島の文化に親しい一族である。