clarification

The Gerbstadts that I have traced are from North/Northwestern Germany while the names originate in the East. There is at least 600 years of migration to get from Thuringa/Sachsen/Bayern to Hannover and Hamburg. The names and places were the result of trying to document my guess as to the sefinitions of the surnames. I did not expect to find castles and cities and such.
I have written to an administrator in Gerbstet with the hope that he can put me in touch with the organization that erected miniatures of famous but ruined places in that region and within the city itself. If anyone can tell me where and when the name started and who the cities' founders and protectors were it would be that historical society. Will let you all know when a response arrives.
As for the particulars that I know, I am still trying to write something up regarding the research. Even though this is for the family, I'd hate to plagerize.