His mother was FUJIWARA no Yoshiko (Shin Sukenmon in), a daughter of Naidaijin Juichii (Minister of the Palace, Junior First Rank) Takayoshi KUSHIGE, and his brother was Emperor Nakamikado.
母は内大臣従一位櫛笥隆賀の娘・藤原賀子（新崇賢門院）、同母兄弟に中御門天皇がいる。