Marx Brothers made a guest appearance to introduce the "Tonight Show's" new host, Johnny Carson. Around 1960, the acclaimed director Billy Wilder considered writing and directing a new Marx Brothers film. Tentatively titled "A Day at the U.N.", it was to be a comedy of international intrigue set around the United Nations building in New York. Wilder had discussions with Groucho and Gummo, but the project was put on hold because of Harpo's ill-health and abandoned when Chico died in 1961. He was 74. Three years later, on September 28, 1964, Harpo died at the age of 75 of a heart attack
Wilhelm Marx in Bonn, where he died in 1946. Marx is buried at the Melaten-Friedhof of Cologne. Changes Wilhelm Marx Wilhelm Marx (15 January 1863 – 5 August 1946) was a German lawyer, Catholic politician and a member of the Centre Party. He was Chancellor of Germany twice, from 1923 to 1925 and again from 1926 to 1928, and he also served briefly as Minister President of Prussia in 1925, during the Weimar Republic. He was the longest-serving Chancellor during the Weimar Republic. He was born in 1863 in Cologne to Johann Marx, the rector of a Catholic school (1822-1882) and his