Custis Tombs on Arlington Plantation. Custis Tombs, also known as Custis cemetery at Arlington, is a historic family burial ground located near Cheapside, Northampton County, Virginia. It consists of two tombs surrounded by a poured concrete platform raised a few inches above ground level. It includes the grave of John Custis (ca. 1629-1696), Major General and member of the Council for Virginia and progenitor of the Custis family in America. The other tomb is the box-like marble tomb of John Custis IV (1678-1749) with its pyramidal top and drapery carvings on the long sides.[3] The tombs were associated with Arlington mansion and located west of the separately listed Arlington Archeological Site. The site was listed on the National Register of Historic Places in 1970.[1]