I have put together 2 family trees. One with all the information out there I could find and the other I have actually researched and have found proof. The second one is on this site. Needless to say it's muh smaller only 119 people currently while the other has 3,000 something. My research however has only been online so far mainly census'. It's gotten me a solid 5 generations back, 6 as soon as I find proof of Louis Roberts parents.
I have to admit most of the campbell line and branches comes from various written histories and not actual records. I could have gone much further with these but the last real proof (that I've found)is Samuels will. I haven't done much research on the wives lines so they're all from a history. At least from Jonathan Campbell on.