During the reign of Hirotaka YAMAGUCHI, the second lord of the domain, fiefs were consolidated in Hitachi Province and Shimousa Province, and jinya (the headquarters) was set up in Ushiku.
第2代藩主・山口弘隆のとき、領地が常陸国、下総国に集められ、牛久に陣屋を構えた。