By Royal Charter, Van Cortlandt Manor was originally a 86000 acres tract granted as a Patent to Stephanus Van Cortlandt in 1697 by King William III, stretching from the Hudson River on the west to the first boundary line between the Province of New York and the Colony of Connecticut, on the east, twenty English miles in length by ten in width, in shape nearly a rectangular parallelogram, forming, "The Manor of Cortlandt."