It just came to me, there is one Gretzinger that moved to the greater Baltimore area. I believe it was my dads and Roberts cousin and brother to Kenneth who passed about 7 or 8 years ago while still living in Bridgeport. I know his health was too bad to plan or attend his brother Kenny's funeral, so Robert made all of the arrangements.
Does any of this make sense, are you from that area?
I am waiting to hear from my aunt and sisters for more clarity.
Just got a email from a cousin who has done research: William D. Gretzinger, Chief of Police (known as Big Bill) in Bridgeport from 1927 - 1933 (He passed away in 1933 on the job). I have a very interesting article. I'll scan it and send it to you.
I can get it to you or post it somewhere if you have never seen it.