According to Wikipedia: "William Theodore Link was an American film and television screenwriter and producer who often worked in collaboration with Richard Levinson.
Born in Philadelphia, Pennsylvania, William Link was the son of Elsie (née Roerecke) and William Theodore Link, a textile broker. His mother had German Huguenot heritage. Link discovered late in life that his father's parents were Jewish. Link's niece, Amy, examined a suitcase William Theodore had left to his son, which they had kept in their attic. She opened it in 2011 and it turned out to contain genealogical research and evidence done by William Theodore during World War II. Amy had discovered that Link's paternal grandparents were Jewish. Link earned a degree from the University of Pennsylvania's Wharton School of Business prior to serving in the United States Army from 1956 to 1958.