Etymology and distribution of 巌島.

Iwashima 【巌島】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Toukyou-to , Hyougo-ken . Originated from Tochigi-ken Utsunomiya-shi one street (old: Song Bridge). A place name with a record since the Edo period. The place name was also written as "Uda Bridge." Kagawa-ken Takamatsu-shi Tamamo-cho was in the Edo period in the Sanuki Takamatsu clan in the Clan office.