Fort Nassau was a factorij in New Netherland[1] between 1624–1651[2][3][4] located at the mouth of Big Timber Creek at its confluence with the Delaware River.
The creek name is a derived from the Dutch language Timmer Kill as recorded by David Pietersen de Vries in his memoirs of his journey of 1630–1633.
[11][12] While thereafter the fort was continuously manned, the location was ill-suited to trade, as the richest fur-trapping areas were on the west side of the Delaware River.
In 1651, Petrus Stuyvesant, Director-General of New Netherland, had his local representative Andries Hudde partially dismantle the fort, relocating its armaments and other equipment to a position on the other side of the river.
The Dutch appointed John Paul Jacquet as governor, and made New Amstel the capital of the Dutch-controlled colony.