Etymology and distribution of 七久保.

Nanakubo 【七久保】^{レベル3
About 150}  The Japanese surnames etymology dictionary.

Kagoshima-ken , Oosaka-fu . Terrain . Added 'mountain' to Hiroshi, the surname of the Kamoshima-ken Amami archipelago. Estimated at the time of returning to Japan in 1953. Kagoshima-ken Ooshima-gun Tokunoshima-chou Distributed in Kameitsu. 寛 Hiroshi reference.