866 - Uwa District divided into Uwa and Kita Districts.
On February 25, 1876, Okinoshima, Himejima, and Ugurujima Islands were sent to Hata District in Tosa Province
On December 16, 1878, The district was divided to create the Nishiuwa, Higashiuwa, Kitauwa, and Minamiuwa Districts. The Uwa District was thus dissolved.