Etymology and distribution of 福加.

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

Kanagawa-ken , Gunma-ken . 室伏 's variant. Gunma-ken Numata-shi Nishikurauchi machi was in the Edo period in Numata Shinto of the Clan Office. 室伏 Murofushi reference.