Relational database that intends to collect, process and make available, in a systematic and standardized way, the documentation already published related to Medieval Lisbon (1147-1521), until now scatered in different collections. It allows to cross information about the content of each document, its production chronology and the actors registered in them - producers, recipients, writers or witnesses -, as well as the exact indication of the place or places of publication of each diploma and the archival quota of the respective handwritten testimonies.