Etymology and distribution of 文馬.

Bunma 【文馬】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Ooita-ken Kusu-gun Kusu-machi . Ooita-ken Kusu-gun Kusu-machi Originating from Yamada. The name of the place called "Yamada Township" in the Kamakura period. Meiji New surname by monk of Hiroji temple of Jodo Shinshu located in the same place. There is also a tale that the suicide name was Sato in the same temple. 佐藤 Satou reference.