During the last years of his life, Poggio Bracciolini (1380-1459), former Apostolic Secretary and Chancellor of Florence, was working on a long text that he characterized, in a letter written in 1458, as lacking a well-defined structure. This was most probably his history of the people of Florence (Historiae Florentini populi, the title given in Jacopo’s dedication copy to Frederick of Montef…