born of their father's second marriage. Du Pont graduated from Haverford School in 1957. He attended the University of Pennsylvania, where he belonged to the Zeta Psi fraternity, but withdrew before completing his freshman year. He later attended college in Miami, Florida, where he studied under and was mentored by scientist Oscar T. Owre. He graduated from the University of Miami in 1965 with a Bachelor of Science degree in zoology. He went on to complete a doctorate in natural science from Villanova University in 1973. During an October 2015 podcast, Mark Schultz revealed that when du Pont was about thirty years old, a horse he was riding threw him onto a fence, resulting in injury to his testicles. They became infected and had to be removed, resulting in androgynous characteristics for the remainder of his life. Science career During his graduate work, du Pont participated in several scientific expeditions to study and identify species of birds in the Philippines and South Pacific. As an ornithologist, du Pont is credited with the discovery of two dozen species of birds. He founded the Delaware Museum of Natural History in 1957. As a young man, he served on the board, helping guide the institution toward opening in 1972. After having been part of scientific expeditions, he served as director of the museum for many years. Personal life At the age of 45, on September 3, 1983, du Pont married 29-year-old Gale Wenk, an occupational therapist. They met after he injured his hand in an auto accident. They lived together for less than six months. Du Pont filed for divorce when they had been married for ten months. Wenk sued du Pont for $5 million, claiming he had pointed a gun at her and tried to push her into a fireplace. The divorce became final in 1987. Du Pont's will excluded her from inheriting any of his estate. In 1987, it was estimated that John du Pont was worth $200 million. Interests Philately Du Pont was also a philatelist. Bidding anonymously in a 1980 auction, he paid $935,000 for one of the rarest stamps in the world, the British Guiana 1856 1c black on magenta. After his death, this stamp was sold at auction for $9.5 million (inclusive of buyer's premium) at Sotheby's June 17, 2014. For the fourth time, the stamp broke the record for a single stamp's sale. The unique stamp