Etymology and distribution of 辰頭.

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

Akita-ken , Hokkaidou , Ibaraki-ken .

① Akita-ken Akita-shi Birth of Kawabe Totojima. Place name with a record in the notation of "Toshima" during the Warring States Period.

② variant of 豊島 . Tokushima-ken Mima-shi Tradition in Mima-cho. The era of rename is unknown. 豊島 Toyoshima reference.