Etymology and distribution of 四牟田.

Shimuta 【四牟田】^{レベル3
About 90}  The Japanese surnames etymology dictionary.

Tochigi-ken Ashikaga-shi , Nagano-ken . 相田 form of 相田 . Tochigi-ken Ashikaga-shi In the Yamakawa Town, it says that it was described as "Aida" in the Edo period. 相田 Aida reference.