Especially, his third son, FUJIWARA no Mototsune was adopted by Yoshifusa, and produced many Tojo Family (Family Rank of Kugyo), starting with Gosekke (the Five Regent Families) descendants.
特に三男の藤原基経は良房の養子となり、その子孫からは五摂家を初めとして多数の堂上家を輩出した。