author
Best known for gritty, streetwise crime stories, this American novelist and screenwriter brought a sharp New York voice to both books and film. His work includes The Pope of Greenwich Village and Family Business, stories remembered for their humor, toughness, and strong sense of place.

by C. Vincent Patrick, W. Whately (Walter Whately) Smith
Born in the Bronx on January 19, 1935, he built a career as both a novelist and screenwriter. Reliable sources available here identify him as the writer behind The Pope of Greenwich Village, Family Business, and screen work including The Devil's Own.
His fiction is often associated with crime, family loyalties, and working-class New York settings, giving his stories an energetic, lived-in feel. That mix of toughness and warmth helped make his work stand out across both print and film.
I wasn't able to confirm enough additional biographical detail from strong sources in this session to go further with confidence, so this overview keeps to the essentials.