Hmm, my grandfather's certainly did. Of course, I've seen the pictures and it was pretty big when he was young too, but in advanced age, he had great pendulous ears and a fine round bulb of a nose to go with it, quite completed the effect.
But my halfbreed dad's head doesn't appear to be abnormally large, nor does it appear to be growing. It does seem to be getting a good bit more round as he ages, however.
(Me, I got one a lot taller than it is fat. I have a phrenologist's wet dream of a commanding brow, but coming a hair short of the steely square jaw that's supposed to go with it, it seems I'm doomed to just get by.)