From the March 24, 2017, Newsday (Long island, NY) by Danny Schrafel.
Two houses on a lot are listed at $2.2 million on 3.2 acres. This also includes the grave of Thomas Jefferson Davis at the rear of the property.
He enlisted in the Union Navy on April 15, 1865 and served on the USS Heliotrope, a wooden steamboat that was part of the Potomac Flotilla.
The VFW comes out every Memorial Day and puts a new flag on his grave. I was unable to find out any more information on him, but it would be interesting to find out how he came to be buried there.