The Prosopographia Imperii Romani, abbreviated PIR, is a collective historical work to establish the prosopography of high-profile people from the Roman Empire.
The time period covered extends from the Battle of Actium in 31 BC to the reign of Diocletian.
The first edition was rapidly achieved and published in Berlin in the line of the great works of scholarship from the historical school of economics which had been successful in achieving the project of a corpus of all the Latin inscriptions, the Corpus inscriptionum latinarum.
The first booklet of the second edition was led by Edmund Groag and Arthur Stein[1] who brought together the letters A and B.
[2] Volume 2 of the PIR includes notes for all the well-known Roman senators, the nobles, and some civil servants not of equestrian rank, such as manumitted imperial freedmen who are attested in the literary tradition.