It reminds me of this research [0] showing that sons of wealthy slave owners (who presumably lost a large chunk of their "wealth" after the civil war) had caught up or surpassed sons from similarly wealthy households by 1880.

Conclusion: "This paper adds another data point to our understanding of intergenerational wealth transmission. Our conclusion: it’s not the resources here, it’s the social connections."

[0] https://twitter.com/leah_boustan/status/1112689110819442690