Ushikubo 【丒久保】1 The Japanese surnames etymology dictionary.
Hiroshima-ken Fukuyama-shi , Hiroshima-ken Jinseki-gun Jinsekikougen-chou . 前原 's variant. Estimated changes are Maehara, Maya Hara, Umayahara. Hiroshima - ken Jinseki - gun Jinsekikougen - chou was in Warring States Period in Kobatake. Yamaguchi-ken Hagi-shi Horiuchi was in the Edo period in the Choshu clan of the clan office. The same clan called "Maehara". 前原 reference.
※ There is a transmission from the place name of Chiba-ken Chubu (old: Kazusa). Period, location unknown.