Fujiwara no Sōen

Fujiwara no Sōen (1033–1111) was a late Heian nobleman regarded as the founder of the Utsunomiya clan of Shimotsuke Province. Genealogies make him the second son of Fujiwara no Kanefusa and a great-grandson of the regent Michikane. He served Minamoto no Yoriyoshi and Yoshiie in the Earlier Nine Years' War, earning merit through prayers for victory.

In 1063 he was appointed protector of Shimotsuke and bettō of Futaarayama Shrine, the province's ichinomiya. Tradition credits him with building Utsunomiya Castle. He died in 1111, and Hatta Munetsuna succeeded him.