Etymology and distribution of 富久保.

Tomikubo 【富久保】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Gifu-ken , Aichi-ken . Thing . From the arrow. In Gifu-ken Yamagata-shi Sasaga it is Gifu-ken Yamagata-shi Ohwa Castle of Blue Wave It is told that Mr. Kunieda of Mr. Toki's vassal keeper got the wild boar quickly in the warring country era. 国枝 Kunieda reference.

※ Oosaka-fu Oosaka-shi Kitada Ward Dojimahama tells us that it was renamed from the Kunishima surname because of his achievement in bow and arrow. Period, location unknown. 国嶋 Kunishima reference.