___ McFly great-great-grandfather of Marty NYT crossword answer is:
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George McFly is the great-great-grandfather of Marty from the popular 1985 movie, Back to the Future. He is a character that is often overlooked but is integral to the plot of the movie. George is a timid and shy man who is constantly bullied by Biff Tannen. Despite his timid nature, George eventually finds the courage to stand up to Biff and win the heart of his future wife, Lorraine Baines. His courage and determination to overcome his fears is an inspiring example for Marty and the audience.