Etymology and distribution of 給下.

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

Oosaka-fu , Niigata-ken , Fukui-ken . Creation . In Niigata - ken Genji 's descendant called. Period, location unknown. 源 Minamoto reference.

There is a tale that there was an ancestor who called "Genji" as a character as "Genji" because it is Genji. Period, location unknown.