Hart Pomerantz was Lorne Michaels's original partner, back when Michaels was still known as Lorne Lipowitz. Their top-rated CBC variety show, The Hart and Lorne Terrific Hour, was a precursor for Saturday Night Live before it was pulled from the airwaves after two short seasons.
Lorne Michaels used to be Lorne Lipowitz, and his comedy partner was Hart Pomerantz - a gifted comic who wrote for Woody Allen. Their CBC show, The Hart & Lorne Terrific Hour, was the template for SNL. Lorne left, Hart stayed. He's still a comedian, and a lawyer.