Etymology and distribution of 笠間屋.

Kasamaya 【笠間屋】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Gunma-ken . Gunma - ken Agatsuma - gun Higashiagatsuma - machi Tell us that Tomizawa sweeping section Mr. Tadahisa called in Otoro during the Warring States Period. 富沢 Tomizawa reference.

※ It was in Heian period in Kagawa-ken . Kagawa-ken Sanuki-shi The duck (cabbage) is a place name with a record since the Heian period.