Etymology and distribution of 計馬.

Keima 【計馬】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Akita-ken , Hokkaidou , Ibaraki-ken . Distribution including also Neda. Akita-ken Oga-shi In Funakoshi Shiga-ken tells Mr. Sasaki in the Kamakura period. There is also a story in the same place that Mie - ken Tsu - shi came to Yamagata - ken Tsuruoka - shi from 1394 to 1428 ( Yearnable years). 佐々木 Sasaki reference. Akita-ken Akita-shi Chiaki Park was in the Edo period in the clan san Kubota of the Clan office. The same clan says that he came from Ibaraki-ken from Eastern Oosaka-fu (formerly Kawachi-kun) in the descendant of Ogasawara Nagasaki, a warrior of the Heian period and the Kamakura period. 小笠原 Ogasawara reference.