I've been researching some families with similar surname that were in Albany before the Revol War. What are your grandparents' names and dob/dod? Perhaps they are related to the folks I'm researching.
BTW, there are many different reasons for changing spelling of Nemeyer/Niemeyer/etc surname, each particular to the line. The reasons in your ancestral line will be different from those in other Nemeyer/Niemeyer/etc line.