Etymology and distribution of 率川.

Isagawa 【率川】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Toukyou-to , Yamaguchi-ken · Miyazaki-ken . 伊勢 family name is present. Kanagawa-ken Isehara -shi Isehara was a place name with a record since the Edo period. Tell the place name that it was developed by people from Mie-ken Chubu (formerly Ise). 伊勢 Ise reference.