I came across your original query from more than 10 years ago. I am related to your Gijsbertus van Eeuwijk and Johanna Maria van Veghel (though not a direct descendant) and am interested in learning more about the information you have to show that this couple emigrated to the USA in the 1850's. I am also interested to verify which Gijsbertus you are referring to. There are many Gijsbertus' in the van Eeuwijk family and according to my info, Johanna Maria is married to a Gijsbertus who was born in 1776 as a son of Petrus van Eeuwijk and Maria Eliasse. I also have a Gijsbertus who was born in 1784 as the son on Walrandus van Eeuwijk and Paulijna van Alem, but I have no further info on him.
Anyway, would be interesting to compare notes.
Best wishes for 2010.