Genealogy
This member of the Fujiwara clan was the son of Fujiwara no Nagayoshi, who was one of the brothers of Fujiwara no Yoshifusa. Mototsune was adopted as son and heir of Yoshifusa. In other words, Yoshifusa was Mototsune's uncle, and father through adoption.
He was married to Princess Sōshi (操子女王), daughter of Imperial Prince Saneyasu (son of Emperor Nimmyo).
Their children were
- Tokihira (時平) (871-909) - Sadaijin
- Nakahira (仲平) (875-945) - Sadaijin
- Tadahira (忠平) (880-949) - Daijō Daijin, Sesshō and Kampaku
- Yoriko (頼子) (?-936), consort of Emperor Seiwa
- Kazuko (佳珠子) (?-?), consort of Emperor Seiwa
- Onshi (温子) (872-907), consort of Emperor Uda
- Onshi (穏子) (885-954), consort of Emperor Daigo, and mother of Emperor Suzaku and Emperor Murakami
He was also married to a daughter of Imperial Prince Tadara (son of Emperor Saga).
They had a son.
- Kanehira (兼平) (875-935) - Kunai-Kyō (宮内卿)
The other children were
- Kamiko (佳美子) (?-898), consort of Emperor Kōkō
- Yoshihira (良平)
- Shigeko (滋子), married to Minamoto no Yoshiari (son of Emperor Montoku)
- daughter, married to Imperial Prince Sadamoto (son of Emperor Seiwa), and mother of Minamoto no Kanetada (源兼忠)
Read more about this topic: Fujiwara No Mototsune