Andrea,
Your documentation and comments regarding disputed parents is very appropriate and necessary. Since it looks as if you only have two other parties interested in the profile, your approach of contacting them and getting consensus on how to approach the parents is great Wikitree collaboration.
Unfortunately I do not have an source suggestions for you but this is where documentation of both the sources that affirm or dispute factual claims is important.
Give good and bad sources info and tell us why the bad source is bad or lacking. Then we do not have to keep comming back to bad info, it as been looked at and rejected. This puts the burden on those who give us bad info to find new info to support thier claim. Cite your Sources, good and bad.
Good job!