The following data is extracted from Genealogy and Biography of Ontario County, New York.
Juriaen Westvall, the immigrant ancestor, was among the earliest settlers of Ulster county, New York, at what is now (1910) Esopus, near Kingston. He and twelve others petitioned, August 17, 1659, for a church at Esopus and the petition was granted. He owned lot 25 of the original division of land in 1662 and another grant May 29, 1667. He was a steady, persevering, upright and influential citizen. He married Marretje Hansen. Their three sons Johannes, Symon and Niclaes removed to Orange county and were grantees of land at the town of Deerpark in 1696. Between 1737 and 1800 there were in the two churches at Menssinck and Machacheneck, at Deerpark, over seventy heads of families of this surname, descendants of the immigrant. Juriaen died about 1667. Children : Rymerick, married Thomas Theunisse Quick (published, December 7, 1672) ; Johannes, married Maritje Jacobz Cool, January 28, 1682, at Kingston; Niclaes, married (first) Maria Montagnje, April 21, 1702 and (second) Zara Van Aken, October 20, 1712; Abell, baptized September 25, 1661; Symon, baptized September 30, 1663; Flsjen, baptized June 2, 1666.
Source: Genealogy and Biography of Ontario County, New York