Quote from Pekelo:
For the record, Fischer's biological father was the Hungarian born Paul Nemenyi, who worked on the Manhattan project. Also a Jew, thus making Fischer Jewish on both sides of his lineage...
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"Paul Felix Nemenyi was a Hungarian physicist specializing in fluid dynamics. He obtained the D.Sc. in Berlin in 1922 and lectured on engineering at the Technical University of Berlin.[1] Sacked when the Nazis came to power, he found work for a time in Copenhagen.
He arrived in the USA around the outbreak of World War II, where he briefly held a number of teaching positions in succession and took part in hydraulic research at the State University of Iowa.[2]. In 1941 he was appointed instructor at the University of Colorado, and in 1944 at the State College of Washington.[3]
During World War II he was also employed on the Manhattan Project. In 1947 he was appointed physicist with the Naval Ordnance Laboratory, White Oak, Maryland.[4]
He died on March 1, 1952, at the age of 56.
He has been described as having âextreme[ly] versatile interests and eruditionâ.[5]
He was identified in a 2002 story in The Philadelphia Inquirer as the likely biological father of chess champion Bobby Fischer."