Not Who's Almost Who In Knickerbocker Village History

I was pursuing the possibility that there could be a Jon Stewart/KV connection. Not quite. He was born Jonathan Stewart Leibowitz. His paternal great-grandfather had a shoe store on Rivington Street and his paternal grandfather was a cab driver. On his mother's side his grandfather was Nathan Laskin, a struggling immigrant who owned a series of small businesses in New York. I had some email correspondence with John's dad Donald to see if there was any family connection to KVers Joe and Stephen Leibowitz or Harry Liebowitz. No luck.