no, not from the church books. It is a list from a Frankonian Research Group who do family researches. Within the list ar 31 persons with the surname Heiselbetz from 1600 to 1866 from the villages I gave you before.
For Heiselbetz emigrants there are only two names:
Heiselbetz Johann Christoph from Neustadt/Aisch emigr. about 1889
Heiselbetz Peter Christoph 26 years old from Neustadt/Aisch emigr. about 1882
Yes, it could be Gruber. But this name you can find everywhere in Bavaria and Germany. On the list there is no Victoria Gruber!