That has to be a Lego figure from the related book on the assassination, and since Eva uses the word "approach" in her hint, I'm guessing it is a lawyer, but the beard is losing me.
I'm going to change the subject to Presidential assassinations, not just Lincoln. Garfield was in a train station, so maybe he had a valise or briefcase in his hand when "approached" and shot by Guiteau? Yes? No?