Etymology and distribution of 生友.

Ikutomo 【生友】^{レベル3
About 140}  The Japanese surnames etymology dictionary.

Ehime-ken Shikokuchuuou-shi , Yamanashi-ken , Oosaka-fu . Terrain . From stone and water. Ehime-ken Shikokuchuuou-shi Kitano, Doi-machi base. Tell him that he was engaged in agriculture in the same area. Estimated in the Edo period. In Yamanashi-ken , it says that it was also described as "Iwashi." Estimated in the Edo period. 岩水 Iwamizu reference. Gifu-ken Gujou-shi Yahata-cho Yanagi-machi was in the Edo period in the Gujo clan in the Clan Office.