HI,
Guillaume Nel is an ancestor of mine and I am on Familysearch as well, where my family tree goes all the way back to Abraham, et-al through this line.
Happy to share my tree, which flows through several different lines of royalty, including Niall, Heremon, et-al. The Nel and Els lines are key to this Royal lineage, which includes emperors of Egypt, China and Japan, as well as monarchs all over Europe and Scandinavia.
The furtherest Nel we have possibe sources for seems to be: Pierre Néel I
Please see the following projects regarding descents from antiquity:
https://www.geni.com/projects/Descents-from-Antiquity/12283
https://www.geni.com/projects/Testing-for-Fake-Medieval-and-Ancient...
@Brian James Hand
Pse do not enter your tree, it might be on Geni already - complete with source documentation.
It creates a lot of extra work to merge duplicates created and sorting out whose info is correct.
If you search for and find your ancestors, just request to be added as co-manager on the profile.
Only if you cannot (unlikely) find and ancestor, add it onto Geni