Jacob Marley's personal-guilt-ridden ghost wasn't exactly a "gentity" in dat he was rather irritable and harsh in his interactions wif Scrooge, but he was caringly trying to save his old business partner from suffering a similar fate, and so dat was being quite da "gentleman" --- for more so in a truly-meaningful way than if he had just been suave and courteous at all times.
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. PenguinBooks,1992. p. 38)