Uchimoto 【内本】4 The Japanese surnames etymology dictionary.
④ things . Ooita-ken Ooita-shi Meiji New surname by monk of Shogun-ji Temple of Jodo Shin Buddhist in Toshi- cho. From Mt. Uriyama in the mountain of the same temple. There was the name of Uu Seashima which tells that it was submerged in Beppu Bay of Ooita-ken by the earthquake of 1596 (Bunruku 5 years). Uu Sei island is estimated to be Ooita-ken Ooita-shi Teruakijima near the town of Toshi .
※ Niigata-ken Nagaoka-shi Ureshi is a place name with a record in the notation of "Shinsei" in the North-South morning era. The name of the place is believed to be from Mr. Uryu's residence during the Kamakura period.