Etymology and distribution of 蓬山.

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

Gifu-ken Hida-shi , Gifu-ken Takayama-shi , Kouchi-ken . Terrain . From Yuzu and a village. Gifu - ken Hida - shi Furukawa - cho Isao Maru is based. Gifu-ken Yamagata-shi Takatomi was in the Edo period as a clan sister of the Takatomi of the clan office. Kouchi-ken Tosa-shi Asai is based. There is a chestnut tree in a small story in the same place.