The Japanese surnames etymology dictionary.
① Creation . In Hokkaidou Ishikawa-ken Kanazawa-shi Marunouchi from Ishikawa-ken Northern (formerly Noto County) told that from the Kaga lord of the clan office from Mr. Kaga in the Edo period Mr. Masuda gave a letter of "Qing" and inserted it. Ishikawa-ken Housu-gun Anamizu-machi It is distributed in Nakai. 真田 reference.
② things . From Shingota Shrine. Aichi-ken Ichinomiya-shi Makita (Masumida) was a place name established from Shingota Shrine in the same place in 1948. "Shingida-so" which called near the same place is a place name with a record from the Heian period to the Sengoku period. The company has a record in 847 (Yoshiwa 14 years). It was in the Tokyo era as the shrine of the company.