I doubt it. I've been listening to Dave for about 7 yrs now and in one of the earlier videos or someone interviewing him he says; He lives in Florida, He's from Michigan, worked in the financial arena, has four kids. That's all I garnered from his personal life. (And Dave's voice is very deep with a definite accent; like a NYC drawl).

JFK,jr had a higher pitched voice and sort of a upper class Bostonian accent like his mother Jackie-O.