From https://www.wikitree.com/wiki/Schenck-474:
Mistaken Identity
Martin Schenck was the father of three siblings who immigrated to New Amsterdam around 1650. The father of these three siblings has often been confused with Martin Pieterse Schenck van Nydeck, who appears to have a royal ancestry. This confusion goes back to "research" by the unreliable Col. Jhr. W.F.G.L. van der Dussen, "who was a rather well-known genealogist in the Netherlands in the last half of the 19th century... no scientific Dutch genealogist of today accepts Col. van der Dussen's dictums without verification at the hand of the original records."
Source: William J. Hoffman, F.G.B.S., "An Armory of American Families of Dutch Descent," in New York Genealogical and Biographical Record, vol. 68 (1937), p. 115.
