Masuya 【桝舎】1 The Japanese surnames etymology dictionary.
① Topography . From mountain and island like land. Tochigi - ken Nikkou - shi In the Yunishigawa it is said that southern Ishikawa - ken (formerly Kaga) is out. Ishikawa-ken Kanazawa-shi Marunouchi was in the Edo era at the Kaga clan in the Clan office. Ishikawa-ken Hakusan-shi Annichi-cho (old: Yamajima) is a place name with a record since the Edo period.