I am researching the WURMs from Hungary. There are several teories concerning the origin of WUM as a surname:
1. The ancestors of the family originated from the medieval German town of WORMS.
2. Its a fantasy name in contemporary German, meaning WORM in English.
3. Its a fantasy name from old or middle German, meaning Dragon in English (Like in the operas of Wagner.
There rae sveral forms, like WURM, WORM, VURM, VORM etc.