Location of the Bonnells in Spotsylvania

From George Farris:

Regarding the location of the Bonnells in Spotsylvania, the 1772 deed document seems to place them on Plentiful Run (now Plentiful Creek).  Plentiful Creek is only about 6 miles long and is a tributary of the North Anna River near the Orange County line.  The last mile or so forms the Plentiful Creek embayment of Lake Anna near Belmont, VA. So they were quite close to Louisa and Orange Counties and quite a ways from Fredericksburg.