Gerrit took the oath of allegiance to the British in 1689, in Ulster County. In the year 1700 he was Ensign of a foot company in the counties of Ulster and Dutchess, under Coenraad Elmendorf, Captain. In 1712 he was Deacon in the Dutch church at Kingston, and as such joined in a petition for its incorporation.
He was known as Gerardus at Esopus, where he was engaged in farming until 1717, when he sold his land in Ulster County, and removed to the township of More-land, then Philadelphia, now Montgomery, County, Pennsylvania, where his name was transformed to Gerrit.
Cornelis Pieters **** Stamvader Amerikaanse tak ***** Wincoop , geboren in 1630 - Holland, gestorven
Maria janse van Langendyck , geboren in 1632, gestorven
Johannes Cornelissen Wincoopin 1659
Gehuwd