Which one is OUR Gerhard Naber?

Here are two ships lists, both claiming NABERs arrived.  This first one was the Charlemagne, arriving in New Orleans in May, 1848.  Near the bottom is the B H Naber family: wife (H) ann M, and sons Theodore (25), John H (23) and John G (18).  They were from Salzburg and brought "eight chests clothing".  We're pretty sure "John G." is our Gerhard, because he he was born in April 1829, so would have been 18, as it says here.  We also have other evidence that gives creedence to their arrival in New Orleans, but I can't find it in my notes..sigh! 

Then, in August, 1851, another batch of NABERs arrived on the Stephani, this time in New York City.  Diedrich, Hermann, Margaretha, Heinrich and Gerhard.  They came from Oldenburg and were headed to 'Milwaukie'.  They were all between 15 and 25 years old.  Gerhard here, and John G above, were 18. But this Gerhard would have been born in 1833.  We do know there were Nabers in Wisconsin too, so this might have been that family.

Ok, it's obvious I started out with an answer to the Q posed in the headline.  This is just clarification...lol