Etymology and distribution of 堅城.

Kenjou 【堅城】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Fukushima-ken , Niigata-ken . Distribution including Bangnai as well.

① Banai is the mainstream in Fukushima-ken . Fukushima-ken Aidzuwakamatsu-shi Tells that it is a pioneer in Kitaizu Town Miyanoshita. Shizuoka-ken Eastern (old: Izukokuni) comes out. Period, location unknown.

② Mie-ken Matsusaka-shi Originated in Osaka (Sakanai) town. Place name with a record in the notation of "Saka Nai" during the North and South morning era. The place name was also written as "Sakauchi".

③ Ooita-ken Nakatsu-shi Birthplace of Yamaguni-cho Tsuki Sakauchi. It is distributed in the same place.

Katashiro 【堅城】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Toukyou-to . There is the era of 1441 to 1444 (Yoshiyoshi (Okaku) year). Toukyou-to Adachi-ku There is distribution on the Adachi.