In Germany even obscure codes like "88" (H is the 8th character in the alphabet) are referred to Nazis.

This happended just a few days ago: http://www.huffingtonpost.com/2014/05/09/ariel-detergent-naz...

There are special rules for license plates:

http://en.wikipedia.org/wiki/Vehicle_registration_plates_of_...

So i highly doubt, that a German non-nazi child will ever be named Adolf again.

I'm surprised at Winston and Franklin - I'm pretty confident that the bump/spike was due to Churchill and Roosevelt. Barack unfortunately was not in the list, so we can't compare that. But compare that to Joseph (Stalin), also a common name, which didn't experience a dip. But then again, neither did Adolph.

Is there a name that experienced a dip, and then became popular again, due to a significant person?

Realistically, how frequently to you hear the infamous 20th century leader referred to as "Adolph Hitler" today, as opposed to just "Hitler" (or, "literally Hitler")? I think by 2029 the fact that his first name was "Adolph" will fall into the pile of "mostly obscure history facts".