Etymology and distribution of 伊賀谷.

Igaya 【伊賀谷】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Ehime-ken , Kagoshima-ken · Miyagi-ken . Terrain . From the place of residence and slope. Ehime-ken Uwajima-shi Marunouchi was in the Edo period in the Uwajima clan in the Clan Office. The same clan says that it changed from Yamada surname at 1729 (Kyoro 14 years). 山田 Yamada reference.