Etymology and distribution of 大沢口.

Oosawaguchi 【大沢口】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Iwate-ken Toono-shi . Heteromorphism of 音喜多 . Iwate-ken In Toono-shi tells that he changed the name from the Beido surname in the Edo period. 音喜多 Otokita reference. There is also a story that the same residence from Yamanashi-ken came to the North and South morning era.