In April 1164, after the marriage of Motozane KONOE, chief adviser to the Emperor, and Moriko, Munemori's younger maternal sister, Munemori, together with Shigehira, were appointed to the position of attendant of the Sekkan-ke Mandokoro government office.
長寛2年（1164年）4月、関白・近衛基実と宗盛の同母妹・盛子の婚姻が成立すると、宗盛は重衡とともに摂関家政所の別当になった。