Etymology and distribution of 三反.

Sandan 【三反】^{レベル3
About 140}  The Japanese surnames etymology dictionary.

Chiba-ken , Toukyou-to , Ibaraki-ken . A variant of 菅沢 .

Santan 【三反】^{レベル3
About 140}  The Japanese surnames etymology dictionary.

Chiba-ken , Toukyou-to , Ibaraki-ken .

① 菅原 surname is present. Chiba-ken Katori-gun Tako-machi In Nishikonai we tell you that Nagano-ken is out of the ground. 菅原 Sugawara reference.

② Saitama-ken Niiza-shi Birth of Sugasawa. A place name with a record since the Edo period. It is distributed in the same place.