I ran into this family when working on 133 Suggestions for the Netherlands.I have no particular interest in this family otherwise.
Samuel Wilcox https://www.wikitree.com/wiki/Wilcox-714
and his father and grandfather lack dates, Samuel's son was born in 1869. His father Nathaniel T Wilcox (https://www.wikitree.com/wiki/Wilcox-715
) was born in Amsterdam and died in Ohio. His father Nathaniel J Wilcox (https://www.wikitree.com/wiki/Wilcox-716
) was a life long resident of the Netherlands.
The only source listed is a link to a website that is now dead. I found it in the wayback machine (and adjusted the link on Samuel's profile). The profiles have text that is clearly copied from an old (most probably out of copyright) book. However, the book is not cited. I tried searching for text from the profiles and have not found the books. I tried looking for the book that it seems like the site in the wayback machine is referring to and do not find the text (links in research Notes in Samuel's profile)
I have not found the profiles in the US Census, but with no dates that is challenging,
I am stumped. Can someone else give this a try?