Daniel,
Can you provide some details on your ancestor Louis (= Ludwig) Gohmann. E.g. do
you know how old he was when immigrating (allows to guess his birth year) and
more about the birth place? "Hannover" doesn't really mean much, that could be
any of 1000 or so places...
Without that it is like searching for the needle in a haystack.
Regards,
Nils (Lenke)