However, in 1726 his nephew and the third lord of the Domain Uetsugu KUTSUKI (the lord of Fukuchiyama Domain) (Uemoto's son) died young, so he succeeded to the family estate of the head family and became the fourth lord.
しかし享保11年（1726年）に甥で第3代藩主の朽木稙綱(福知山藩主)（稙元の子）が早世したため、本家の家督を継いで第4代藩主となる。