On a side note, I'm on ship going from Budapest to Passau right now. Every tour guide seemed to discuss the Habsburg (actually just a couple of them over and over). After buying a postcard with "Habsburger" line on it with with Rudolph at that top,a I decided to dig deeper. I'm possible a descendent or Rudolph I and his son Albrecht and two different daughter's lines per WikiTree.
Rudolph I seems to be a bit of a mess with at least two doubtful offspring (not in FMG or WIkipedia or in quick google searches), Euphemia and Frederick. I will try to add some sourcing during Source-A-Thon. Some of the profiles have primarily German content with duplicate content and text bulk copied from German Wikipedia. I can't do much with them. Also, his children are largely unsourced and some have text for Rudolf versus the child. The bad children may have come from a unsourced geni.com profile.