Etymology and distribution of 友数.

Tomokazu 【友数】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Gifu-ken , Aichi-ken , Ehime-ken . Birth of Aichi-ken western part (formerly Owariari). Place name with a record since the Kofun period. "Mr. Fujiwara of Owari" means. Tell him that it was called in the late Heian era. 藤原 Fujiwara reference. Kyouto-fu Fukuchiyama-shi Oe town Oto is a stopover. A place name with a record since the Edo period. Tell him that Mr. Mr. Mr. Muto resided in Muromachi period.