Hi Bill:
I am not sure if you know, but Hannover is both a city and state (US
terms), kind of like New York and New York State. In my experiences
when someone referred to Hannover, it was the Kingdom of Hannover
(kinda like a state), not the city of Hannover. However, if an
individual was from the city of Hannover, their reference would
probably been to the city.
There is a city of Dortmund in Germany, but It appears to me that it is
in the area of [1]North Rhine-Westphalia not Hannover. However, in
this genealogy game, one discovers that there are no absolutes , but
you can come close.
Gale