Hunter, your observation is correct.
Justin Durand yourself and George added one of the daughter's profiles but gave no source. Care to comment?
The two women have wandered a bit from what I entered. The result of merges, no doubt.
I had Stéphanie (not Étiennette), daughter of Thierry IV (not Thierry III) and wife Gertrude von Habsburg, daughter of Otto II von Habsburg and his wife Ita de Ferrette (not Wernher II von Habsburg and his wife Ita von Starkenberg).
MedLands calls her Etienette but cites a contemporary document that calls her "Stephania mea matre". No problem there. Either Stéphanie or Étiennette would be acceptable Gallicizations.
I don't want to make this more complicated than it needs to be. The basic idea is that the source I used combined the two Thierrys, father and son, and made Gertrud a sister of Wernher II rather than his daughter.
If we need it, I can pull my notes and go over this in more detail. but this is a case where I'd put more trust in MedLands citations.
http://fmg.ac/Projects/MedLands/burgkmontb.htm#ThierryMontbeliarddi...
http://fmg.ac/Projects/MedLands/SWABIAN%20NOBILITY.htm#WernerIdied1...
We seem to be missing a Ludwig von Saarwerden
Ludwig I von Saarwerden, Graf von Saarwerden
Cawley is telling us there are two sons named Ludwig
http://fmg.ac/Projects/MedLands/ALSACE.htm#FolmarSaarwerdendied1165 tho it seems a bit strange to me.
I don't see the link immediately but Ludwig(s) mother Etiennette de Montbéliard has the Von Salm family crest as her profile picture which must be why I was working on Ludwig's profile back in 2014.
Hunter Winn, your original query was about the erroneous children of Gertrud. I have moved them to their correct position in the tree as her sisters-in-law and locked up this portion of the tree. Thanks for letting us know there was an issue.