Dudley Wheeler Stewart and Eliza Fish Denison were 4th cousins and because of this they share many ancestors. The line which works backwards to Robert Williams contains two lines from two of the sons of Robert.
Two of the sons of Robert Williams, brothers Dea. Samuel Williams and Isaac Williams married two sisters! These women were the daughters of Dea. William Park (a son of Robert). They were named Theoda and Martha.
Robert Parke and his wife are buried at Whitehall Burying Ground but they have no real gravestones so this monument was erected in their memory.