Shinauchi 【科内】2 The Japanese surnames etymology dictionary.
① Topography . From the lower field. Ishikawa-ken Kaga-shi In Yamanaka Onsen told me that Meiji New surname is in Kamiminbo-cho. From the Shimonomon gate of the gate division system that was in the Edo period. An example of the location of the gate. Kagoshima-ken Minamisatsuma-shi Kinpe- cho Nakatsuno, Kagoshima-ken Minamisatsuma-shi Miyazaki Kinomine-cho. Kagoshima-ken Kagoshima-shi Iza Town, Kagoshima-ken Hioki-shi Fukiage-machi Wada, Kagoshima-ken Minamikyuushuu-shi Shimono gate in Kurori-cho gun.
② Birth of Tochigi-ken (formerly Shimonotsu country). Place name which we called "goby area" during the Kofun period.