Presidents and First Ladies Trivia

[Eva Elisabeth]

First of all thanks for all your excellent guesses and sorry for the delay. The login didn't work on my smarthphone for whatever reason. I was able now to login on my computer, but the problem is I'm rarely at home, so I hope it won't stay like this.

I'm sorry to say none of your brilliant guesses is right. Gene, I suppose Jip was too smart to need any advice, don't you think so?

Hint#1: Before his presidency he once had held an office in a city where Mary T.L. had lived for some time.