What is not known, is that Károly is also a national hero in his native Hungary. During my summer visit to Budapest, I saw an amazing number of signs in his recognition: There are streets named after him, and even parks!
See the photo set on Flickr.
Since the signs are in Magyar, Hungary's national language, I went to an expert on that language who is a university professor and a native speaker too. He confirmed that "kert" means "cannot be distracted", and "korut" means "does not sleep", and "V. ker. Belvaros" means "very cool Drupal core developer"
Nice to see Karoly get the recognition he deserves.