Etymology and distribution of 豊増.

Toyomasu 【豊増】^{レベル4
About 1,300}  The Japanese surnames etymology dictionary.

Yamanashi-ken , Nagano-ken · Kyouto-fu . Originated from Shiga-ken Higashioumi-shi Odagari-cho (old: Hitsubishi). Place name unknown record era. A place of comparison in tradition. Shiga-ken Hikone-shi Tells Kinugamecho that it was given in 1810 (Seven years of culture) from Naoya Ii of Hikone lord owner of the clan office, with the surname of "Hitsubishi's" Ryoshi "and the real name of Izawa" Sawa ". 伊澤 Izawa reference.