May 11, 1679: He was assigned to be 父数直卒 and succeeded to a family head of Tsuchiura Domain on June 18 before becoming sojaban (an official in charge of the ceremonies) on October 17, 1679.
1679年（延宝7年）4月2日、父数直卒、　5月10日、土浦藩家督相続、　9月13日、奏者番に就任。