When his lord Terumasa IKEDA was awarded the territory of 520,000 koku (crop yields of rice per year of the estate) and became the castellan of Himeji-jo Castle located in Harima Province after the Battle of Sekigahara, Masanobu was given karoku (hereditary stipend) of 4,600 koku.
関ヶ原の戦い後、主君の池田輝政が52万石を領して播磨国姫路城主となると家禄4600石が与えられた。