Martin..who is the author of the Island at the Center of the World? This is a very interesting era for me. I am researching the "Van de veer" currently spelled "Vandiver"

Cornelius Van de veer is known to have been a corporeal serving a Dutch trading company. I can find the Van de veer family in the Netherlands in the early 1200s and can find mention of them operating a ferry in the vicinity of New Amsterdam (Manhattan) in the mid 1200s. Any help would be appreciated.