In 1654, Printz was succeeded by the colony's last governor, Johan Rising (min emfas), at a time when the Dutch capitol of New Amsterdam was ruled by the hot-tempered Peter Stuyvesant. Soon after arriving in New Sweden, Rising attempted to remove the Dutch from the colony by seizing Fort Casimir (present-day New Castle, Delaware), below Fort Christina on the western shore of the river. With no gunpowder, Fort Casimir surrendered without a shot and was re-named Fort Trinity.
The furious Governor Stuyvesant had his revenge the following summer, when seven armed Dutch ships and 317 soldiers appeared on the Delaware River. Realizing that resistance would be useless, the vastly outnumbered Swedes surrendered Fort Trinity and Governor Rising surrendered Fort Christina two weeks later.