When Tsunayoshi TOKUGAWA and Keishoin visited the residence of Honjo clan (it is called 'Shogun onari') on December 18, 1692, he was added 20,000 koku, and consequently, he had the territory changed to the Hitachi Province and became the lord of the Kasama domain with 40,000 koku.
元禄5年（1692年）11月11日には徳川綱吉と桂昌院が本庄邸に「将軍お成り」し、この際に2万石加増で領地を常陸に移されて笠間藩主4万石となった。