Lancaster and Genealogy

One of the reasons we stayed over in Lancaster was to do some ancestry sleuthing. W and I are both descended from the founders of Downington, PA and I wanted to at least see the area. About all we accomplished was to peer through the trees toward the stone house built by Thomas Downing in the 1730's and still standing. I was informed by a local historical society volunteer that the current owner didn't like history-types nosing around, so I couldn't get a good view of the house. Here is a better one, from the satellite view on google maps.