Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Maximilian I, Holy Roman Emperor:

"
  1. Barbara von Rottal (1500–1550), wife of Siegmund von Dietrichstein, member of the House of Dietrichstein. Some report that she was the daughter of Margareta von Edelsheim, née Rappach,[27] while Benecke lists the mother as unidentified.[23]
  2. George of Austria (1505–1557), Prince-Bishop of Liège.[citation needed]