He was owner of one-half of "Van Slyck's island" lying immediately west of Schenectady. He died in the fall of 1662, and his brother Jacques Cornelise Van Slyck inherited his property.
The island was at first called "Marten's island" and was owned by Marten Maurits and Jan Barentse Wemp in common. (128-4)
Notes
(128-4) Notarial Papers, I, 48, 74; see also Van Slyck and J. B. Wemp; patent of this island of date Nov. 12, 1662, in Union College Library.