found: Science fiction encyclopedia website, Jan. 7, 2016(Paul Frederick Ernst: Born in West Peoria, Illinois, on November 7, 1899, died in Zephyr Hills, Florida, on September 21, 1985. US writer, mostly of short fiction for pulp markets, sometimes under his own name and sometimes under the pseudonym Paul Frederick Stern; he should not be confused with either (Karl Friedrich) Paul Ernst (1866-1933), a German writer in various genres, or with Paul Ernst (1886?) who wrote 1930s detective novels; under the House Name Kenneth Robeson, Paul Ernst was responsible for much of the contents of The Avenger, writing all 23 novel-length stories for that magazine between 1939 and 1942, each featuring The Avenger, a Superhero who fought a wide range of villains; the Robeson House Name had already been made popular by Lester Dent in Doc Savage magazine, and it was in an attempt to cash in on the success of the name that it was offered for Ernst's use)