At that time, he allotted three 'gun' (three districts) in Nishi Harima region (Shiso-gun, Sayo-gun and Ako-gun) to his younger brother Tadatsugu, and as a result, the fief of the Himeji Domain reduced to 420,000 koku.
この時、西播磨三郡（宍粟郡・佐用郡・赤穂郡）十万石を弟・忠継に分与したため、姫路藩の所領は42万石となった。