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The two economists — Guglielmo Barone and Sauro Mocetti of the Bank of Italy — compared data on Florentine taxpayers in 1427 against tax data in 2011. Because Italian surnames are highly regional and distinctive, they could compare the income of families with a certain surname today, to those with the same surname in 1427. They found that the occupations, income and wealth of those distant ancestors with the same surname can help predict the occupation, income and wealth of their descendants today.
Full article here: http://blogs.wsj.com/economics/2016...today-are-the-same-families-as-600-years-ago/
There is also another study, which found this to be true not just for Florence, but for the whole world:
https://www.youtube.com/watch?v=QyIMwzHuiCU
Excerpts:
"(...) Surnames retain status information, for - in some cases - as many as 20 generations, if they start out high enough in the status disrtribution. The locational surnames from 1300 in England, did not become completely average till about 1700, which represents 400 years later. And let's say at 30 years per generation, that's a lot of time. High status surnames from 1800 in England, are still high status now. So if we know about you, for example, that you have a rare name, and that someone with that name attended Oxford or Cambridge around about 1800, then we can predict now that you have a 4 times greater than average chance of attending Oxford or Cambridge. And that's the only thing we know about you, is that you share a surname with someone 200 years ago, who happened to attend Oxford or Cambridge. (...)"
"(...) The rate of social mobility revealed by surnames varies little across societies and epochs. Social mobility rates in Britain now, are about the same as in the Middle Ages. They have not changed, they have not improved. (...) In Communist China, after the revolution of 1949 which was accompanied by the execution of a large part of the previous ruling class and the flight of many other members of that class to Hong Kong, to Taiwan, to the United States, social mobility rates have improved very very slightly. And it is still the case that names that were high status under the Qing Dynasty in China, are overrepresented amongst the Communist elite now, in modern China. (...)"
Full article here: http://blogs.wsj.com/economics/2016...today-are-the-same-families-as-600-years-ago/
In 1427, Florence was near bankrupt from an ongoing war with Milan and so the Priors of the Republic conducted a tax census of about 10,000 citizens. They took stock of the name and surname of the head of household, their occupation and their wealth.
About 900 of those surnames are still present in Florence, with about 52,000 taxpayers having those names. The authors note that Italian surnames are especially good for this effort, because they are highly regional. While not every person with a certain surname in Florence today will be a descendant of the people with that name in 1427, it’s a good bet that most are. To see how these “families” had fared over the intervening six centuries, they compared the surnames against Florence’s 2011 tax records. (As a condition of access to this data, the authors did not publish the surnames.)
They find strong evidence that socioeconomic status is incredibly persistent. The wealthiest surnames in Florence today belong to families that, in 1429, were members of the shoemakers’ guild — at the 97th percentile of income. Descendants of members of the silk guild and descendants of attorneys — both at the 93rd percentile in 1427 — are among the wealthiest families today.
“The paper is about economic mobility (or persistence), that is whether the rich remain the rich,” the economists wrote in an e-mail from Mr. Mocetti, “But this does not necessarily imply that they are getting ever richer. Therefore there is not a direct relation with the Piketty argument (increasing inequality over time).”
The economists say their evidence suggests persistence is somewhat highest for the wealthiest, which they interpret as evidence for “the existence of a glass floor that protects descendants of the upper class from falling down the economic ladder.”
But they note their research is not focused on the super elite at the top 1% of income. Their finding is for the overall population. The entire top 33% of the income distribution in 1427 is likely to be wealthier today. This is a far broader group than Medici princes and dukes, with castles and estates to hand down through the centuries. This suggests that some 25 generations later, the hundreds of descendants of comfortable — but far-from-regal — leathermakers are likely to be doing quite well, and it’s not because they inherited great(x25)-grandpa’s shoes and belts, let alone his palaces.
There is also another study, which found this to be true not just for Florence, but for the whole world:
https://www.youtube.com/watch?v=QyIMwzHuiCU
Excerpts:
"(...) Surnames retain status information, for - in some cases - as many as 20 generations, if they start out high enough in the status disrtribution. The locational surnames from 1300 in England, did not become completely average till about 1700, which represents 400 years later. And let's say at 30 years per generation, that's a lot of time. High status surnames from 1800 in England, are still high status now. So if we know about you, for example, that you have a rare name, and that someone with that name attended Oxford or Cambridge around about 1800, then we can predict now that you have a 4 times greater than average chance of attending Oxford or Cambridge. And that's the only thing we know about you, is that you share a surname with someone 200 years ago, who happened to attend Oxford or Cambridge. (...)"
"(...) The rate of social mobility revealed by surnames varies little across societies and epochs. Social mobility rates in Britain now, are about the same as in the Middle Ages. They have not changed, they have not improved. (...) In Communist China, after the revolution of 1949 which was accompanied by the execution of a large part of the previous ruling class and the flight of many other members of that class to Hong Kong, to Taiwan, to the United States, social mobility rates have improved very very slightly. And it is still the case that names that were high status under the Qing Dynasty in China, are overrepresented amongst the Communist elite now, in modern China. (...)"