Old Saybrook is a town in Middlesex County, Connecticut, United States. The population was 10,242 at the 2010 census. It contains the incorporated borough of Fenwick, as well as the census-designated places of Old Saybrook Center and Saybrook Manor. in 1624, shortly after establishing their first settlement at Governor's Island, Dutch settlers established a short-lived factorij at present day Old Saybrook. The trading post was named Kievits Hoek, or "Plover's Corner". Kievits Hoek was soon abandoned as the Dutch consolidated settlement at New Amsterdam. In 1633, Fort Goede Hoop (Huys de Goede Hoop), was established at present-day Hartford.