However, with help from the Tairo (chief minister) Tadakiyo Sakai, who was convinced by the HOJO family, Ujiharu was awarded with 10,000 Goku (crop yields) under the pretext of establishing a new domain, and thus he was able to succeed Sayama Domain.
しかし、北条一族の運動により大老の酒井忠清の取り成しで、氏治は新たに藩を立てるという名目で1万石が与えられて継ぐこととなった。