The article concerns Norwegian settlers on the East Coast of North America in the middle of the 17th century. From the first known Norwegian presence in 1626 Norwegian workers were sought after on Dutch Manhattan. Several Norwegian families were also present on the Rensselaerswijck estate up the Hudson River in the 1630s and 1640s. In a way, the article tells a story about local communities on both sides of the Atlantic, a story about a wider cultural community in a time of high mobility, where local history-sources can play an important role. But the article also introduces the Dutch colonial sources, including material about Norwegians in New Netherland. The Dutch sources show how the practice of changing names from Norwegian to Dutch complicates the identification of actors in a historical period when sources are scarce. The interpreter Claus Carstensen claims in 1657 to come from “Sant in Noorwegen”. His original name was probably Nils Kristensen and his home town could have been Sand in Ryfylke, Norway. Finally, a connection is drawn to the sloop “Restauration” in 1825, the first Norwegian emigrant ship, with people from Ryfylke, initiating the large-scale Norwegian emigration 150 years after the Dutch definitively lost the colony of New Netherland to the English in 1674.