Etymology and distribution of 河合屋.

Kawaiya 【河合屋】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Ishikawa-ken Suzu-shi . Thing . From the plant 's throat. Ishikawa-ken Suzu-shi Meiji New surname by monk of Jodoji in Jodo Shimosu in Otoshima-cho. The mountain of the temple is a monkey mountain and the temple crest is a peony. There is also a tale that the civil servant name was Kusaka. 日下 Kusaka reference.