Etymology and distribution of 弘芝.

Hiroshiba 【弘芝】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Okayama-ken , Hyougo-ken . 森藤 's variant. Okayama-ken Setouchi-shi Ushiwadamachi In Beppu Window tells that the timber trader named after Saito surname of the same place renamed from the family surname he called in about 1818 (cultural year). It is unknown whether defense exists. 森藤 Moritou reference.