The prosopography of Polish nuns is a topic often overlooked by historiography, both secular and ecclesiastical. The lack of studies on this subject means that even in the genealogy of Polish families, such as the works of prof. W. Dworzaczek, nuns are deliberately omitted. There are also no monographs on individual nunneries, and the available armorials contain only a small percentage of nuns. Access to historical sources is also difficult, as they are often lost or incomplete. The few available publications on nuns focus mainly on prominent figures, and information about ordinary members is very limited. Finding information about individual nuns requires tedious work in archives, where full monastery records are often missing. The author describes her work on creating a prosopography of Polish nuns, based on preserved sources, mainly monastery records. Despite the difficulties, it is possible to collect information on thousands of nuns from various monasteries, although this number is only a fraction of the actual population of nuns. The study also includes a time frame and a file structure that allows both organizing and searching information. The author encourages cooperation with other researchers and sharing information, and informs that work on the prosopography of nuns is still ongoing and requires the involvement of many people.