The Japanese surnames etymology dictionary.
① Topography . From a new way. Nagasaki-ken There is a transmission from Higashimichiji-cho of Higashisonogi-gun · Nishisonogi-gun. Location unknown. Estimated Muromachi era. Nagasaki-ken Oomura-shi Kushima was in the Edo period in the clan Omura of the Clan Office. Kyouto-fu Jouyou-shi Tomino says that he lived in the Kamakura period.
② Topography . Yamagata - ken Nishiokitama - gun Oguni - machi In the small country Kosaka Town, Uesugi 's vassal is reportedly renamed from surname by giving the letter of "Road" due to achievement. Estimated in the Warring States Period. Yamagata-ken Nishiokitama-gun Oguni-machi is a grapefruit . 今 reference.
※ Aichi-ken Nagoya-shi There was a record in Atsuta Ward in 1466 (Fumimasen First year). Aichi-ken Nagoya-shi It tells from Nakaginosuke (old: Imado) which is a small geographical name of Atsuta Ward.