Etymology and distribution of 穴藤.

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

Shiga-ken Nagahama-shi . A variant of the 雨森 . Shiga-ken Nagahama-shi Meiji New surname by monk at Yoshizawa Temple in Shogun-son Shimosuke Amemonomori. 雨森 Amemori reference.

※ Niigata-ken Jouetsu-shi Honjo-machi was in the Edo period in the Echigo Takada Samurai of the Clan Office.