Ina clan (伊奈氏, Ina-shi) was a Japanese samurai family which descended from Minamoto no Tsunemoto (894-961)[1] of the Seiwa-Genji.
[2] The original surname of the family was "Arakawa", but the clan began calling itself "Ina" when it moved to the Ina region in Shinano Province in modern-day Nagano Prefecture.
This move was ordered by the Ashikaga shogunate in the 15th century.
[1] In 1590, Ina Tadatsugu was established in Musashi Province at Komoro Domain with 13,000 koku revenues.
However, the clan was dispossessed in 1613 because of Ina Tadamasa's part in a plot organized by Okubo Nagayasu.