Etymology and distribution of 分玉.

Bungyoku 【分玉】^{レベル3
About 100}  The Japanese surnames etymology dictionary.

Ehime-ken Imabari-shi , Hiroshima-ken , Toukyou-to . Summary . Abbreviation for Bow Mountain. Ehime - ken Niihama - shi Tell him that he changed his name from Karuyama 's surname in Oshima during the Nanboku and Morning era. Later it was written as "Yuyama". Ehime-ken Imabari-shi Kikuma-machi Sawata is based. 弓山 Yumiyama reference.