Delbert von Straßburg is from approximately 1470 when the town was most definitely German! It didn't become part of France until after World War I. Don't refer to the town as Strasbourg because that's the French spelling.
The funny "ß" character in the middle of the word is called a "scharfes s" and is the way that a double - "S" is written in some places in German words. It's pronounced like an "s", not like a "B" (which it looks a bit like), or like "FS" which it also resembles.
It's not even derived from the Greek letter "beta" which it looks a lot like (you can use a beta as a substitute in handwriting if you want) but is in fact a long "s" (as seen in medieval and renaissance text) followed by a short "s".
If you don't have one of these in your font set, or on your typewriter, then it's OK to use a double - "s" instead. In fact it's even OK to use a single "s" in this context because spelling rules were pretty slack in 1470!
The famous German medieval poet Gottfried von Straßburg was from this town, and wrote one of the many editions of the "Tristan and Isolde" romances appearing in medieval literature.
There's no suggestion that Straßburg has anything to do with dance whatsoever.