Kary Schwarzenberg (1937-2023) was the last of his kind. I attended his Requiem Mass which was celebrated in Vienna's Stephansdom shortly before Christmas.
Here is what I wrote about it for Zurich's daily NZZ.
Onkel Kary will be greatly missed. As is often the case with intellectual giants, his perception in the public differed from the one in his own family. The film his daughter Lila made about their difficult relationship bears witness to that.
I highly recommend it. You will have to find out how to stream it in your region, in some countries "Mein Vater der Fürst" is available on Amazon Prime.