Etymology and distribution of 大筋.

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

Toukyou-to . Distribution that also includes tadpoles. Origin of Ibaraki-ken Ishioka-shi Obata (Obata). A place name with a record since the Kamakura period. Tell the place name was pronounced as "Ohata" with the notation "乙 field". Toukyou-to Musashimurayama-shi Central is based. In Toukyou-to Musashimurayama-shi there has been a belief that he came from 1329 to 1331 and 1332 (Yuan Toku year).

※ Tochigi-ken Yaita-shi Ohata (Otsuhata) is a place name with a record in the notation of "Yoda" during the Warring States Period. It was in the Sengoku period in the same place.