Zeppo Marx was from East Frisia in Germany; and his father was a native of France, and worked as a tailor. As with all of the Marx Brothers, there are different theories as to where Zeppo got his stage name: Groucho said in his Carnegie Hall concert in 1972 that the name was derived from the Zeppelin airship. Zeppo's ex-wife Barbara Sinatra repeated this in her 2011 book, "Lady Blue Eyes: My Life with Frank". His brother Harpo offered a different account in his 1961 autobiography, "Harpo Speaks!," claiming (p. 130) that there was a popular trained chimpanzee named Mr. Zippo, and
George Marx with noted arachnologists in America and Europe including Tamerlan Thorell, Eugène Simon, James Henry Emerton and George Williams Peckham. Marx completed and edited "Die Spinnen Amerikas" (The American Spiders) which had been left unfinished by the death of the original author, Eugen von Keyserling. Marx was a founder and active member of the Entomological Society of Washington and served as president of the organization in 1891. In addition to all his other activities he also found time to continue his medical studies and in 1885 received an M.D. from Columbian University (now George Washington University). Marx died on January 3,