Etymology and distribution of 牧森.

Makimori 【牧森】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Yamaguchi-ken Shimonoseki-shi . A variant of 能野 . Yamaguchi-ken Shimonoseki-shi Meiji New surname by monks of Jodo Shin Buddhist monastery in Toyota-cho Ohihara . 能野 Nouno reference.