Etymology and distribution of 登世岡.

Toyooka 【登世岡】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Saga-ken Imari-shi , Yamaguchi-ken , Hyougo-ken .

① 広川 's variant. Saga-ken Imari-shi Seto Town Nakadori is based. Oosaka-fu Minamikawachi-gun Kanan-chou Hirokawa is a place name with a record since the Kamakura period. The place name was also written as "Hirokawa".

② Sina series . Originated from the People's Republic of China in Sannomcheon-shi, Henan Province, Shaanxi province near Baotou City (formerly Honon) County. Hiroshi's "Hiroshi" is used. There is a record of naturalization on Toukyou-to Itabashi-ku on May 29, 1974. The real name is Yang. 楊 You reference.