If you are related to me through a Knickerbocker then you are also related to Johannes Dyckman(Dijckman). Johannes is one of the first of our Dutch ancestors to set foot in the new world. I’ve posted a new page of some descendants of Johannes here.
In the following letter to Peter Suyvesant, Director of the colony of New Netherlands, Johannes is introduced and a recommendation made to place him in any avaiable vacancy. In 1652, Johannes is made commissary of Fort Orange ( Now Albany, New York) and Vice-Director of the colony.
The following letter is from: Correspondence 1647-1653 Translated and edited by Charles T. Gehring The Holland Society of New York and the New Netherland project of the New York Library.
More references to Johannes, here.