Regesta Imperii

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The Regesta Imperii , often abbreviated to RI , are a basic work on German and European history in the form of a regesta work .

They are a chronologically ordered inventory of all documentary and historiographical sources of the Roman-German kings from the Carolingians to Maximilian I as well as the popes of the early and high Middle Ages. The sources are collected and arranged as registers , which represent an exact reproduction of the form and content of the documents and the historiographical messages in a shortened version. The regesta are therefore not an independent, scholarly and critical edition of the sources, but rather an aid to accessing them.

The project was founded by the Frankfurt city librarian Johann Friedrich Böhmer , who began collecting and documenting documents from German emperors and kings in 1829. The Regesta Imperii developed as an independent work from this collection, which was originally intended as preparatory work for the document editions as part of the Monumenta Germaniae Historica . While the form of the short regimen is used in the document editions , the form of the full regimen was developed for the Regesta Imperii . The older volumes only show the documents of the German kings and emperors. The younger ones also document chronical sources and documents from other exhibitors relating to the history of the empire . With Ludwig the Bavarian , Friedrich III. and Wenzel is again not considering historiographical sources because of the abundance of material. The registers of these rulers are published according to archives and libraries. With Maximilian I, only a selection of about a fifth of the entire material should be processed.

The project includes the literature database RI-Opac with currently (November 2019) over 2.40 million title references, mainly on the medieval history of the entire European area.

The vast majority of the printed volumes are available in digital form and are freely accessible online. In addition, it is possible to access images from the printout.

The reworking of the Regesta Imperii is a task of the Academy of Sciences and Literature in Mainz (AdW-Mainz) and the working group Regesta Imperii in the Institute for Medieval Research of the Austrian Academy of Sciences in Vienna.


  • Harald Zimmermann (Ed.): The Regesta imperii in Progress and Progress (=  research on the imperial and papal history of the Middle Ages . Volume 20 ). Böhlau, Cologne / Weimar / Vienna 2000, ISBN 3-412-10899-5 .
  • Jan Paul Niederkorn : Julius von Ficker and the continuation of the Regesta Imperii from the death of Böhmers (1863) to its takeover by the Imperial Academy of Sciences in Vienna (1906). In: Karel Hruza, Paul Herold (Hrsg.): Paths to the document, paths to the document, paths to research. Contributions to European diplomacy in the Middle Ages (= research on the history of emperors and popes in the Middle Ages. Vol. 24). Böhlau, Vienna / Cologne / Weimar 2005, ISBN 3-205-77271-7 , pp. 293-302.
  • Dieter Rübsamen , Andreas Kuczera : Hidden, forgotten, lost? Perspectives of the source development through the digital Regesta Imperii. In: Rainer Hering, Jürgen Sarnowsky, Christoph Schäfer and Udo Schäfer (eds.): Research in the digital world. Securing, developing and processing of knowledge. Conference of the Hamburg State Archives and the Center 'Humanities in the Digital World' at the University of Hamburg on April 10 and 11, 2006 . Hamburg 2006, pp. 109–123 (= publications from the State Archives of the Free and Hanseatic City of Hamburg, vol. 20). Online ; (PDF; 13.1 MB)
  • Simone Würz, Moritz Lenglachner: View into the historian's workshop: The working world of the Regesta Imperii - historical basic research in transition. In: Scriptum 1 (2011), No. 2, urn : nbn: de: 0289-2011110214 . (Gives an insight into the activities of the Mainz office)
  • Julian Schulz: Review Regesta Imperii Online. In: RIDE 6 (2017). On-line

Web links


  1. Steffen Krieb , Kornelia Holzner-Tobisch: Regesta Imperii Online. In: German Archives for Research into the Middle Ages 75 (2019), pp. 638–640, here: p. 639.