Willentje Waal (1709-1759)is shown as being married to Elias Van Couwenhoven (1707-1750.)
Their child, Patience Eliase Van Couwenhoven (1736-1802) married Samuel Bowne (1722-1799)
(More on website)
I am not related to this family, just passing on this information, which comes from a website called "American Silversmiths." The link for the site is listed below.