Question: How many times did the murder victim of an heir to the Du Pont family fortune win Olympic Medals?

Context paragraphs:
Owl's Nest Country Place: The Greenville Country Club, formerly known as the Owl's Nest Country Place, is a country club at 201 Owl's Nest Road in Greenville, Delaware.  The 18 acre property was developed in 1915 by Eugene du Pont, Jr., son of Eugene du Pont, as a country estate.  It was one of the first major estates to be built by members of the Du Pont family in northern Delaware.  The main house and three outbuildings were designed by Harrie T. Lindeberg in the Tudor Revival style, and were built in 1915.  The estate's grounds were landscaped by Franklin Meehan and William Warner Parker.  In 1928 an Ellen Shipman-designed boxwood garden was added to the grounds.  The estate has been home to the Greenville Country Club since 1961.

Foxcatcher: Foxcatcher is a 2014 American true crime sports drama film produced and directed by Bennett Miller.  Written by E. Max Frye and Dan Futterman, the film stars Steve Carell, Channing Tatum, and Mark Ruffalo.  The film's plot is loosely based on the events surrounding multimillionaire Du Pont family heir and wrestling enthusiast John du Pont's 1986 recruitment of 1984 U.S. Olympic gold medalist brothers Mark (Freestyle Wrestling - 82 kg) and Dave Schultz (Freestyle Wrestling - 74 kg) to help coach U.S. wrestlers for participation in national, world, and Olympic competition, and the subsequent murder of Dave by John du Pont in January 1996.  Although the film's action is largely set at Foxcatcher Farm, du Pont's now-broken-up 800-acre suburban Philadelphia estate, the majority of the movie was filmed in the Pittsburgh metropolitan area.

Eleutherian Mills: From 1802 to 1921, Eleutherian Mills was a gunpowder mill site used for the manufacture of explosives by the Du Pont family business.  The name also refers to the house on the hill above the mills, which was the first Du Pont family home in America.  The business was founded by Eleuthère Irénée du Pont.  In 1952, the site became an outdoor museum and the Hagley Museum and Library was founded.

Du Pont family: The Du Pont family is an American family descended from Pierre Samuel du Pont de Nemours (1739–1817).  Since the 19th century, the Du Pont family has been one of the richest families in America.

Dave Schultz (wrestling): David Leslie "Dave" Schultz (June 6, 1959 – January 26, 1996) was an American Olympic and world champion freestyle wrestler, a seven-time World and Olympic medalist.  He coached individuals and teams at the college level and also privately.  He was shot and killed by John Eleuthère du Pont, a millionaire philanthropist who sponsored the private Foxcatcher wrestling team at an amateur sports center, known as Foxcatcher Farm, he set up on his estate in Pennsylvania.

John du Pont: John Eleuthère du Pont (November 22, 1938 – December 9, 2010) was an American philanthropist and heir to the Du Pont family fortune, he had been a published ornithologist, philatelist, philanthropist, conchologist, sports enthusiast, self-styled wrestling coach.  He died in prison while serving a sentence of 30 years in prison for the murder of Dave Schultz.

Lammot du Pont II: Lammot du Pont II (October 12, 1880 – June 24, 1952) was an American businessman who was the head of the du Pont family's E. I. du Pont de Nemours and Company for 22 years.

Trial and sentencing of Robert H. Richards IV: Robert H. Richards IV is a convicted child rapist and great-grandson of chemical magnate Irénée du Pont and heir to the du Pont family fortune.

Éleuthère Irénée du Pont: Éleuthère Irénée du Pont de Nemours (24 June 1771 – 31 October 1834), known as Irénée du Pont, or E. I. du Pont, was a French-American chemist and industrialist who founded the gunpowder manufacturer E. I. du Pont de Nemours and Company.  His descendants, the Du Pont family, have been one of America's richest and most prominent families since the 19th century, with generations of influential businessmen, politicians and philanthropists.

Charles I. du Pont: Charles Irénée du Pont (March 29, 1797 – January 31, 1869) was an American manufacturer and politician, and an early member of the prominent du Pont family business.  He was a nephew of Eleuthère Irénée du Pont, the founder of the E. I. du Pont de Nemours and Company, and a member of the Delaware General Assembly.

Supporting paragraphs: John du Pont Dave Schultz (wrestling)
Answer: seven-time