Etymology and distribution of 島河.

Shimakawa 【島河】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Yamanashi-ken Fuefuki-shi , Toukyou-to .

① Topography . From slash-and-burn fields and rice fields. Yamanashi-ken Fuefuki-shi Tell him that he was engaged in agriculture at Misaka Town Kamigaikoma . Estimated in the Edo period.

② In Iwate - ken tell him that it was due to sell the field after Mr. Inito had taken over. Estimated in the Edo period. 井藤 Itou reference.