PYTHIAS appeared in the February 1955 issue of Galaxy Science Fiction.
Sure, Larry Connaught saved my life—but it was how he did it that forced me to murder him!
Frederik George Pohl, Jr. (born November 26, 1919) is an American science fiction writer, editor and fan, with a career spanning over seventy years. From about 1959 until 1969, Pohl edited Galaxy magazine and its sister magazine if, winning the Hugo for if three years in a row. His writing also won him three Hugos and multiple Nebula Awards. He became a Nebula Grand Master in 1993.
Pohl's writing career began in the late 1930s. For the first fifteen years of his writing career, he used pseudonyms: Pohl's first published piece was a poem in the October, 1937 issue of Amazing Stories credited to "Elton Andrews."
From 1939 to 1943, Pohl was the editor of two pulp magazines - Astonishing Stories and Super Science Stories. Stories by Pohl often appeared in these magazines, but never under his own name. Work written in collaboration with Cyril M. Kornbluth was credited to S.D. Gottesman or Scott Mariner; other collaborative work (with any combination of Kornbluth, Dirk Wylie or Robert A.W. Lownes) was credited to Paul Dennis Lavond. For Pohl's solo work, stories were credited to James MacCreigh (or, for one story only, Warren F. Howard.)
In his autobiography, Pohl says that he stopped editing the two magazines at roughly the time of the German invasion of the Soviet Union in 1941. Regardless, works by "Gottesman," "Lavond," and "MacCreigh" continued to appear in various SF pulp magazines throughout the 1940s.
During World War II, Pohl served in the U.S. Army from April 1943 until November 1945, rising to sergeant as an air corps weatherman. After training in Illinois, Oklahoma, and Colorado, he primarily was stationed in Italy.
Pohl started his career as a literary agent in 1937, but it was a sideline for him until after WWII, when he began doing it full time. He ended up "representing more than half the successful writers in science fiction"--for a short time, he was the only agent Isaac Asimov ever had—though, in the end it was a failure for him as his agenting business went bankrupt in the early 1950s.
Pohl began publishing material under his own name in the early 1950s. He collaborated with friend and fellow Futurian Cyril M. Kornbluth, co-authoring a number of short stories and several novels, including a dystopian satire of a world ruled by the advertising agencies, The Space Merchants (a belated sequel, The Merchants' War  was written by Pohl alone, after Kornbluth's death). This should not to be confused with Pohl's The Merchants of Venus, an unconnected 1972 novella which includes biting satire on runaway free market capitalism and first introduced the Heechee.
Though the pen-names of "Gottesman", "Lavond" and "MacCreigh" were retired by the early 1950s, Pohl still occasionally used pseudonyms even after he began to publish work under his real name. These occasional pseudonyms, all of which date from the early 1950s to the early 1960s, included Charles Satterfield, Paul Flehr, Ernst Mason, Jordan Park (two collaborative novels with Kornbluth) and Edson McCann (one collaborative novel with Lester del Rey). ---From Wikipedia