Kenneth Lonergan is a film director,playwright, and screenwriter. He is best known for co-writing Gangs of New York, and for writing anddirecting You Can Count on Me, Margaret,nbsp;and Manchester by the Sea. Lonergan earned an Academy Award nominationas Best Director fornbsp;Manchester by the Sea, and was nominated foran Academy Award for Best Original Screenplay for You Can Count On Me,nbsp;Gangsof New York, andnbsp;Manchester by the Sea, winning for the latter.He also won the BAFTA Award for Best Original Screenplay for Manchester bythe Sea