A recent report by G. Clark points to a sustained persistence of social status in England that extends vertically across several generations and horizontally across many levels of kinship. We seek to put his findings in historical perspective. We do so by relating them to two lines of thinking related to biological inheritance. One predated the rediscovery of Mendel's work and led to the field of quantitative genetics, which dealt on the whole with quasi-continuously varying traits. The other is based on the rediscovery itself and led to a reconciliation between quantitative genetics and discrete Mendelian elements of heredity. Both were enmeshed with the supposed need for, and societal consequences of, eugenics and assortative mating. Also on both issues, the significant ideas can be traced to R. A. Fisher, inspired in one case by F. Galton and in the other by J. A. Cobb, with strong support for Galton and Cobb coming from Karl Pearson. Clark's findings point to societal stratification, and assortative mating for wealth is a straightforward hypothesis to account for it. However, it should be noted that the findings support, but do not prove, the hypothesis.
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