The family library started being set up probably around the beginning of the XX century, by Giuseppe Negroni duke Caffarelli, as a simple collection of texts for personal use about men and women of Caffarelli’s household, for study, consultation or simply leisure reading by those who contributed to setting it up.
With time, as it passed on from father to son, it has grown, and is now comprised not only of texts that were collected solely by the Caffarelli family, but also those passed on from Families related to them.
It was exactly this type of set-up, with heterogenous aims, which made it possible for the heritage to be so varied in genre as to interest scholars as well as a wider audience.
The Caffarelli library was first kept in the Palazzo Rodiani Della Porta Negroni Caffarelli in Via dei Condotti in Rome.
Today it is temporarily stored in the operative HQ office in Via Piero Gherardi n.50, situated in Giardino di Roma, with the aim of continuing the project of organizing and cataloguing, looking forward to finding an appropriate final location near the original HQ together with the Historical Archive.