John Willcocks/Wilcox of Union Co., NJ served in Revolutionary War, died 22 Nov 1776 'in Washington's retreat across New Jersey' and is buried in grave which used to be on family land and is now the "Deserted Village" in the Watchung Reservation, a Union County park. Is that still there? Can the grave still be located? Have very little information about this man's service and would be glad of any further help I can get. Thanks.