↑ Rudolph Freiherr von Stillfried-Rattonitz, Monumenta Zollerana: Quellensammlung zur Geschichte des erlauchten Hauses der Grafen von Zollern und Burggrafen von Nürnberg, Erster Theil, LVIII, Halle a.d.S. 1843, p. 87
Look, I understand the need for an Umlaut there's no need to comment on every person in the Tree. You are more than welcome to use a German keyboard and insert the Umlaut as necessary.
I understand that you get a notification for every comment posted on these profiles and know that you are not responsible for their creation but not being a profile manager or on the trusted list or an administrator and therefore unable to change an LNAB I never-the-less find it important to alert visitors to these profiles to the misspelling.