Etymology and distribution of 後宮.

Ushiroku 【後宮】^{レベル3
About 100}  The Japanese surnames etymology dictionary.

Ibaraki-ken . A variant of 宇留野 . Ibaraki-ken Kasumigaura-shi Distributed in Shinji.

Atomiya 【後宮】^{レベル3
About 100}  The Japanese surnames etymology dictionary.

Shimane-ken , Toukyou-to , Ibaraki-ken .

① Creation . Tell Shimane-ken that it is a descendant of Tianjin Mao, the god of the blacksmith in "Kojiki".

② Chiba-ken Kamogawa-shi birth of Tianjin. A place name with a record since the Kamakura period.

③ Sina series . Originated in Tianjin, Tianjin City, People's Republic of China. In Aichi-ken Nagoya-shi Chikusa-ku, basketball player Zhaoki was naturalized on February 24, 2011 and renamed to Tianjin rare from his native place.