In Yamashiro Province, the family that ruled the middle reach of the Katsura-gawa River and the lower reach of the Kamo-gawa River (the Yodo-gawa River system) greatly contributed to the improvement of these regions.
山背国においては桂川中流域、鴨川(淀川水系)下流域を支配下におき、その発展に大きく寄与した。