Hayek's heritage

Peter Dorman posting at EconoSpeak blogs about the disproportionate impact Jews have had as academic economists. He writes "Jewish or half-Jewish economists come in all stripes, from Hayek and Friedman ..." Friedrich von Hayek (1974) is here, as elsewhere, misidentified as being Jewish. While he was the cousin of Ludwig Wittgenstein, and was involved with von Mises (who was Jewish) in leading the heavily Jewish Austrian School of economics, and was closely involved with the Jewish intelligensia in Vienna, in Hayek on Hayek Hayek states that "my family is on the purely Christian group" (p. 52) and that he was unable to find any Jewish ancestors through genealogical research (p. 53) .