Etymology and distribution of 豊嵜.

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

Ibaraki-ken Toride-shi . Tell Shizuoka-ken Chubu (formerly Suruga country) that the descendant of Onuma called it. Estimated in the Kamakura period from family name and surname Wada. 大沼 Oonuma reference. 平 Taira reference. 和田 Wada reference.