Jimmy Ernst decided early in life not to become  an artist, for fear of being in the shadow of his father, Max Ernst.  Suddenly, at the age of twenty, he felt  the urge to paint, but not in the surrealist style of his father.  He was brought up by his mother, Louise Straus, in  Cologne, after his parents were divorced.  His ethical grounding was instilled by his mother, who was Jewish and a journalist and led him to understand that his father's emotional cruelty did not amount to much in light of the Nazi's actual threats.  

He studied at Cologne-Lindenthal Real-Gymnasium and  the Altona Arts and Crafts School where he completed a three year apprenticeship in printing and  typography.  In 1928 he went to Colorado with anthropologist Gladys Reichard and worked with  Navajo Indians.  In 1938 he emigrated to the United States to escape the Hitler regime; he left Germany just a week before Kristallnacht.  His mother died in a German concentration camp.

Ernst's name and connections landed him a job at the Museum of Modern Art as office boy.  In 1941 Peggy Guggenheim, patroness of the arts in New York, hired him as her personal assistant.  Later he worked with advertising agencies and art galleries.  Ernst taught at the University of Colorado, summers of 1954 through 1965, the Museum of Fine Arts of Houston 1956, and Brooklyn College. He lectured extensively at Pratt Institute. He was the winner of many awards, had many one-man shows and was included in group shows throughout the United States and the rest of the world.  Ernst began experimenting with automatism (use of free visual association to produce bizarrely original images).  In the late 1940s he went through his "jazz" period, i.e. his improvisations gained shape and metaphoric  weight using vibrant, vareigated colors, gradually changing to purifying blacks and whites.  His powers of composition and paint handling increased, reasserting control over his imagery.

In 1961, Ernst traveled through Russia and Europe on grants from the Guggenheim Foundation and the State Department.  At the age of sixty-three, he died at a Manhattan radio station hours after having hung a show.  He was waiting to appear on a talk show promoting the show and a book.  He was married to  Dallas Bauman Brody.  They had one daughter, Amy Louise who is a Music Administrator and a son Eric, a painter.  Ernst was made a member of the American Academy of Arts and Letters in 1983. He died on February 6, 1984.

Sources include:
Dictionary of Contemporary American Artists by Paul Cummings
World Artists 1950-80 by Claude Marks 
From a review  of a book by Donald Kuspit written by Hilarie M. Sheets in ARTnews, May 2001
 
Written and compiled by Jean Ershler Schatz, artist and researcher of Laguna Woods, California