Hamamura 【浜村】5 The Japanese surnames etymology dictionary.
① Convention . Honma's abbreviation. The first element is from Honma's "book". Fukushima-ken Iwaki-shi In Takakazu Baba (Baba) tell him that he used "Honma" of Honma family name and "Horse of Baba". Baba is an unknown place name in the record era. It was in the Edo period in the same place. 本間 reference.
② Nara-ken Gose-shi Honma is a place name with a record since the Muromachi Period. In the Tochigi-ken era, Nagano-ken Ueda-shi Ninomaru was in the Edo period in the Shinano Ueda clan, Shiga-ken Gamou-gun Hino-chou Nishi Odori of the Clan office.