Etymology and distribution of 巨摩.

Koma 【巨摩】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Hokkaidou , Toyama-ken . Terrain . A variant of the 島林 . When handwritten the island forest surname at the time of Meiji New surname, tell her that "Bamboo" and the official misunderstood the forest and became the island bamboo surname. Location unknown. Toyama-ken Imizu-shi Distributed in Honcho. 島林 Shimabayashi reference.