Tokikage UTSUNOMIYA (Tokitsuna MUMO), a legitimate child of Yasumune, succeeded to the estate of the MUMO clan of Hitachi Province, while Mochitsuna MUMO, a great grandson of Tokikage, took over the head family of the UTSUNOMIYA clan which ruled Shimotsuke Province, and the MUMO clan was inherited by Masatsuna HAGA, a grandchild from a daughter married into another family.
嫡子の宇都宮時景（武茂時綱）は常陸国武茂庄を継ぎ、時景のひ孫の武茂持綱は、下野国の宇都宮氏宗家を継ぎ、武茂氏は持綱の外孫の芳賀正綱が継いだ。