 His father died in 1825 and he formally became "daimyō" of Fukui early the following year.His courtesy title became "Echizen-no-kami" and also "Sakon'e-no-shōjō"

Early in his tenure (from 1827) he ordered a five-year fiscal austerity plan in an attempt to rebuild the domain’s finances, and from 1829 he ordered that the domain’s retainers be reduced to half the present number over the next seven years.However, in stark contrast to these efforts, he maintained the luxurious lifestyle of his father and grandfather, and spared no expense when he rebuilt the palace within the grounds of Fukui Castle.