Etymology and distribution of 洞城.

Toujou 【洞城】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Nagano-ken , Oosaka-fu , Kumamoto-ken .

① Originated from Nagano-ken Okaya-shi Tenryu-cho and lakeside (old: beach · shimohama). Place name unknown record era.

② Originated from Yuigahama, Kanagawa-ken Kamakura-shi . Yui is a place name with a record since the Kamakura period. Nagano-ken Matsumoto-shi Central, Nagano-ken Suwa-shi There is a tradition in Shigera.

③ Topography . From the beach. Kouchi-ken Takaoka-gun Nakatosa-chou Meiji New surname that monks attached to fishermen in Kamijoji . Ishikawa-ken Housu-gun There is a tradition in Anamizu-machi . Kagoshima-ken Satsumasendai-shi From the Hama mansion of the gate division system which was in the Edo era in Satomachi-ri.

④ Ainu system . Terrain . Hokkaidou Iburishi-chou Shiraoi-chou is the origin.

⑤ Korea type . Variety of 洪 . "Hama" similar to Hong is used. There is a record of naturalization on January 9, 1967 at Nagasaki-ken Gotou-shi (formerly Tomie Town, Minami Matsuura-gun). The real name is Hong. 洪 Kou reference.

Doujou 【洞城】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Ishikawa-ken Komatsu-shi · Shiga-ken · Oosaka-fu . 浜 Yes surname. Ishikawa-ken Komatsu-shi It is distributed in Furu-cho. 浜 Hama reference.