Fujiwara no Yorimichi, and biological daughter of Imperial Prince Atsuyasu (敦康親王). Genshi's father Atsuyasu died in 1018. Her mother was the younger sister
to 1646, posthumously honoured as Prince Kang Huishun of the First Rank (康惠順親王) in 1653 after Giyesu held the title of "Prince Kang of the Second Rank"