He had brothers including FUJIWARA no Morinaka, FUJIWARA no Sadashige, FUJIWARA no Takanaka, FUJIWARA no Kunimori, and Nenson and he had sons including FUJIWARA no Moritoshi, FUJIWARA no Morimichi, FUJIWARA no Morikata, FUJIWARA no Morimune, FUJIWARA no Morishige (藤原盛成), FUJWIARA no Moritsuna, FUJIWARA no Morikage, and Choshun (重舜).
兄弟には藤原盛仲、藤原定重、藤原隆仲、藤原国盛、念尊らがあり、子には藤原盛俊、藤原盛道、藤原盛賢、藤原盛宗、藤原盛成、藤原盛綱、藤原盛景、重舜などがある。