Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
VANDERMARK
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Dutch.) From the Mark. Mark was the denomination of a kind of county which made the bound or limit of a country--like the British marches. Hence mark-graaf, marquis, the keeper of the marks or marches.