These are the two portraits that come up in an image search on "Edward Boone" (Daniel's brother). Both can be found on family trees for Edward, as well as a couple of websites. The first is actually a portrait of Daniel Boone , which can be found on his Wikipedia page. The second appears to be a portrait of another brother, Squire Boone Jr., as it is very similar to one which has a nameplate. Yes, brothers often look a like, but not that much alike. I'm going to assume there isn't a known portrait of Edward, my child's 8th great grandfather.
Genealogy research for my adopted child