No but my user name is a big hint. Artist who grew up in South Philly 50-60 years ago and had a hit song so big he still lives off the royalties today.....
Chubby Checker?!
I don't know that Chubby Checker did so well. I saw him at a county fair 25 years ago. He was performing in a tent the size of a large restroom, with only two rows of benches, at about 2pm. There may have been only 3-4 people there altogether.
Bobby?
Boyz II Men is my guess
Hmm, my best guess is a member of the Silhouettes (Philly group with one huge hit - "Get a Job" - and nothing else very notable...)