Bree, thanks for raising the question. I am the the Profile manager and profile creator for Dunbar-2578, Dolfin "Lord of Cumbria" son of Gospatric. I was doing a lot of work/research on this family in 2016-17 at the suggestion of John A and a couple others. And when I thought there was enough persuasive clarity on the family I was involved May 2017 in some merging and write ups. I see that in the past 24 hours you have made some helpful edits to improve particularly the sourcing and some other usefull information. Thanks for your skill there.
I would love to hear directly on G2Geuroeristo specifics on cleanup and historic data.
I agree with RJ that the profiles for Fitsgopatric-1 and Fitzdolfin-3 are fantasy bogus and should be removed. If you want to merge Fitsgopatric-1 in Dunbar that is fine to wipe it out, but I will not accept descendant.
The McGuigan, N. (2015) source is particularly persuasive on the impact of Gospatric and his descendants, based on the author's detective work toward history, politics and the subtle logical findings. He has such a wealth of sources that there were a lot more named players and more dispersed shifting power than typical genealogy texts with straight lines and generations.
Just in case you were uneasy with Dunbar as the lnab, I would confirm it isn't based on Historic usage pattern, After a lot of thought, it is a practical choice intended to provide consistency for a couple generations of House of Dunbar.