Research has found that the richest families of Florence in Italy have remained unchanged over six centuries.Italian economists Guglielmo Barone and Sauro Mocetti analysed and compared Florentine taxpayers in 1427 to those in 2011. Comparing family wealth to those with the same surname today, their findings suggested that the richest families in Florence 600 years ago remained unchanged.https://tribune.com.pk/story/1165161/richest-families-florence-1427-remain-richest