The name came from the area called Ashina in the city of Yokosuka in Kanagawa Prefecture.

[citation needed] Sagami-Ashina originated when Miura Yoshitsugu's third son adopted the name Ashina.

Aizu-Ashina was descended from Miura Yoshiaki's son Sawara Yoshitsuru.

[2] The Ashina play a prominent role in Futaroh Yamada's novel Yagyu Ninpocho where, following their defeat by Masamune, they went into hiding only to emerge years later as shinobi in service to the daimyō of Aizu.

They also appear in the 2019 video game Sekiro: Shadows Die Twice, which takes place in a fantasy version of the Sengoku Jidai.