Based on a corpus which consists of 150 family books written between 1260 and 1480, this study intends to define the representations that Florence citizens had of their republic, of its running and of their role within it.The first part aims at identifying which room is given to historical and political passages in these books, and the functions of these excerpts in the overall writing strategy. The point is to study how the building of family identity was connected to the life of the city.The second part contains a stylistic and semantic analysis of the narrative parts that are dedicated to the major events of the 14th and 15th centuries. It offers a series of snapshots that define several specific configurations of the city’s political bo...