According to an epic "Esshu gunki" (an epic of the Asakura clan in Echizen Province), the clan was the Emperor Kaika's descendent, while "Asakura Shimatsuki" (History of the Asakura family) states that, the clan was the Emperor Kotoku's descendent.
『越州軍記』によると開化天皇、『朝倉始末記』によると孝徳天皇の後裔とされている。