He was born as a grandchild of Udaijin (Minister of the Right) FUJIWARA no Sanesuke and he was appointed to Jugoinoge (Junior Fifth Rank, Lower Grade) at the age of 9, then he celebrated his attainment of manhood at the age of 13 and in the same year he became Sahyoe no suke (Assistant Captain of the Left Division of Middle Palace Guards) and Kokushi (an officer of local government) in Sanuki Province, and two years later in 1021 he doubled as Jiju (Chamberlain).
右大臣藤原実資の孫として生まれ、9歳で従五位下に叙され、13歳で元服するとその年のうちに左兵衛佐権讃岐国国司となり、2年後の寛仁5年（1021年）に侍従を兼ねた。