OE no Hiromoto, who served MINAMOTO no Yoritomo, the head of the Kawachi-Genji, was a grandson of OE no Masafusa and supported Yoritomo's achievements from the aspect of domestic administration.
1184年に河内源氏の棟梁の源頼朝に仕えた大江広元は大江匡房の孫であり、頼朝の覇業を内政面で支える。