States: Virginia: Surry
I find in my book of 1815 landowners of Brunswick Co VA there are 3 William's listed. Two are Wm. T. and one just William. Part of Brunswick was taken from Prince George. I only find one reference to the "Pennington" family in my book on homes of Surry Co. The year is not given and no first names. They had at one time owned a home called "Elmshade built around 1854. An older portion is thought to have been built in the 18th century. It is located near Cabin Point.
Hope this helps give you more clues as to where to look.