Furuko 【古湖】2 The Japanese surnames etymology dictionary.
① Topography . From the original field. Kumamoto-ken Kumamoto-shi Chuo-ku Honmaru was a Kumamoto samurai of the clan office, Fukuoka-ken Kurume-shi Sasayama town was in the Edo period in the Kurume clan of the clan office. Kumamoto-ken Hitoyoshi-shi In Tano Town tell me that Meiji Shin surname . Ishikawa-ken Nomi-shi Kurashige cho say that he was engaged in agriculture at the top. Estimated in the Edo period.
② Topography . Add "Da" to the former surname of Amagi archipelago of Kagoshima-ken . Estimated at the time of returning to Japan in 1953. In Kamoshima-ken 's Amami Oshima there is a belief that the rename was made at the time of recreating the family register after the office became a fire. 元 reference.