Willcocks and Badgley Families Cemetery
Cataract Hollow Rd., off of Glenside Ave.
Within The Deserted Village of Feltville / Glenside Park
Map / Directions to Willcocks and Badgley Families Cemetery
This cemetery is believed to contain the graves of up to two dozen people. However, there are only five gravestones. Two of these stones are for the same person: John Willcocks Sr - his original gravestone, as well as a modern one with his military details. In total, there are three men with Revolutionary War connections who have marked graves here: 
John Willcocks Sr.
Light Horse Company, New Jersey Militia
Died November 22, 1776, age 49
Private, 1st NJ Regiment
Died December 5, 1785
Judge Advocate During Revolutionary War
October 20, 1800
This cemetery is located within the Deserted Village of Feltville. The Deserted Village has much else to see, although the rest of it is not related to the Revolutionary War and so is not detailed here. A brochure for the Deserted Village, with a walking tour and map, has been published by the Union County Board of Chosen Freeholders, and is available as a PDF Here.
1. ^ Names, military ranks and dates are taken from the grave stones.
Additional note about William Willcocks as Judge Advocate:
On April 12, 1780, the New Jersey Gazette ran a notice of a court martial that mentions Willcocks' role:
"A General court-martial of the State, of which Col. Neilson is appointed President, is ordered to sit at Chatham, on the 27th instant... Mr. Wilcocks [sic] is appointed to act as Judge Advocate of this court. By order of his Excellency Governor Livingston April 10, 1780."
This April 12, 1780 New Jersey Gazette article was reprinted in the Archives of New Jersey:
William Nelson, editor, Archives of the State of New Jersey, Second Series, Vol IV (Documents Relating to the Revolutionary History of the State of New Jersey / Extracts from American Newspapers Relating to New Jersey) (Trenton: State Gazette Publishing Company, 1914) p.297
Available to be read at Google Books here