The Akita clan, a former viscount family and the descendant of the Ando clan, had handed down a legend that, the Akita clan was the descendant of Abihiko, Nagasunehiko's older brother, however, it is considered to have little credibility due to the possibility that it was influenced by "Soga Monogatari" (The Tale of Soga), the tale written in the eeriest days of the Muromachi period, in which the ancestor of Emishi (northerners) was claimed to be Abihiko.
安東氏の後裔である旧子爵秋田氏には、長髄彦の兄である安日彦の子孫という伝承が残っているが、これは蝦夷の祖を安日に求めた室町期成立の『曽我物語』の影響を受けている可能性が高いため、信憑性は低いと考えられている。