I too am a descendant of Colonel David Jameson of Culpeper Va as far as my research has gone he is my great great great grandfather.The information I have on him is as follows. He retired as a Colonel in the continental army after which he served as the high sheriff of culpeper va. He was married to a woman by the name of Mary Mennis.They together had four sons one died in infancy the others Thomas, David, and George Wellington(my great great grandfather) a relative of mine has written a book containing some useful information about the Jamesons in culpeper. you can find it on Amazon.com and the title is called "The truth is the light if its told in the dark" still looking for pictures of some of my Jameson ancestors so if by any chance you locate any please contact me